Chris Hillery has proposed merging lp:~zorba-coders/zorba/info-extraction-yahoo-broken into lp:zorba.
Requested reviews: Chris Hillery (ceejatec) For more details, see: https://code.launchpad.net/~zorba-coders/zorba/info-extraction-yahoo-broken/+merge/171045 -- https://code.launchpad.net/~zorba-coders/zorba/info-extraction-yahoo-broken/+merge/171045 Your team Zorba Coders is subscribed to branch lp:zorba.
=== added file 'CMakeLists.txt' --- CMakeLists.txt 1970-01-01 00:00:00 +0000 +++ CMakeLists.txt 2013-06-24 09:52:30 +0000 @@ -0,0 +1,29 @@ +# Copyright 2006-2010 The FLWOR Foundation. +# +# Licensed under the Apache License, Version 2.0 (the "License"); +# you may not use this file except in compliance with the License. +# You may obtain a copy of the License at +# +# http://www.apache.org/licenses/LICENSE-2.0 +# +# Unless required by applicable law or agreed to in writing, software +# distributed under the License is distributed on an "AS IS" BASIS, +# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +# See the License for the specific language governing permissions and +# limitations under the License. + +CMAKE_MINIMUM_REQUIRED (VERSION 2.6) + +PROJECT (zorba_info-extraction_module) + +ENABLE_TESTING () +INCLUDE (CTest) + +FIND_PACKAGE (Zorba REQUIRED HINTS "${ZORBA_BUILD_DIR}") +INCLUDE ("${Zorba_USE_FILE}") + +ADD_SUBDIRECTORY("src") + +ADD_TEST_DIRECTORY("${PROJECT_SOURCE_DIR}/test") +EXPECTED_FAILURE(zorba_info-extraction_module/relations.xq 1194069) +DONE_DECLARING_ZORBA_URIS () === renamed file 'CMakeLists.txt' => 'CMakeLists.txt.moved' === added directory 'src' === renamed directory 'src' => 'src.moved' === added file 'src/CMakeLists.txt' --- src/CMakeLists.txt 1970-01-01 00:00:00 +0000 +++ src/CMakeLists.txt 2013-06-24 09:52:30 +0000 @@ -0,0 +1,17 @@ +# Copyright 2006-2008 The FLWOR Foundation. +# +# Licensed under the Apache License, Version 2.0 (the "License"); +# you may not use this file except in compliance with the License. +# You may obtain a copy of the License at +# +# http://www.apache.org/licenses/LICENSE-2.0 +# +# Unless required by applicable law or agreed to in writing, software +# distributed under the License is distributed on an "AS IS" BASIS, +# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +# See the License for the specific language governing permissions and +# limitations under the License. + +DECLARE_ZORBA_MODULE (URI "http://www.zorba-xquery.com/modules/info-extraction"; FILE "info-extraction-module.xq") + +DECLARE_ZORBA_SCHEMA (URI "http://www.zorba-xquery.com/modules/info-extraction"; FILE "info-extraction-module.xsd") === added file 'src/info-extraction-module.xq' --- src/info-extraction-module.xq 1970-01-01 00:00:00 +0000 +++ src/info-extraction-module.xq 2013-06-24 09:52:30 +0000 @@ -0,0 +1,217 @@ +xquery version "3.0"; + +(: + : Copyright 2006-2009 The FLWOR Foundation. + : + : Licensed under the Apache License, Version 2.0 (the "License"); + : you may not use this file except in compliance with the License. + : You may obtain a copy of the License at + : + : http://www.apache.org/licenses/LICENSE-2.0 + : + : Unless required by applicable law or agreed to in writing, software + : distributed under the License is distributed on an "AS IS" BASIS, + : WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + : See the License for the specific language governing permissions and + : limitations under the License. + :) + +(:~ + : This library module provides data extraction functions that return a list + : of entities, relations, categories and concepts present in a given text. + : + : @author Pedro Antunes + : @project Zorba/Data Cleaning/Info Extraction + :) + +module namespace ex = "http://www.zorba-xquery.com/modules/info-extraction";; + +declare namespace ann = "http://www.zorba-xquery.com/annotations";; + +declare namespace yahoo = "urn:yahoo:cap"; + +import module namespace http = "http://www.zorba-xquery.com/modules/http-client";; + +import schema namespace h = "http://expath.org/ns/http-client";; + +(:~ + : Uses Yahoo's Content Analysis webservice to return a list of entities + : encountered in the text supplied as input. + : See http://developer.yahoo.com/search/content/V2/contentAnalysis.html for more information. + : + : @param $text String to be analyzed + : @return Sequence of recognized entities + : @example test/Queries/entities.xq + :) +declare %ann:sequential function ex:entities($text as xs:string) as element(ex:entity)*{ + let $response := ex:server-connection($text) + let $entities := $response/query/results/yahoo:entities/yahoo:entity + return if ( $entities ) then + for $entity in $entities + order by xs:integer($entity/yahoo:text/@start) + return <ex:entity start="{$entity/yahoo:text/@start}" end="{$entity/yahoo:text/@end}">{ + if ( $entity/yahoo:types ) then + for $type in $entity/yahoo:types/yahoo:type + return <ex:type>{ replace($type/text(), '^/|^[a-zA-Z]*:/','') }</ex:type> + else () + } + { $entity/yahoo:text/text() }</ex:entity> + else () +}; + +(:~ + : Uses Yahoo's Content Analysis webservice to return a list of categories (topics) related + : to the text supplied as input. + : See http://developer.yahoo.com/search/content/V2/contentAnalysis.html for more information. + : + : @param $text String to be analyzed + : @return Sequence of recognized categories + : @example test/Queries/categories.xq + :) +declare %ann:sequential function ex:categories($text) as element(ex:category)*{ + let $response := ex:server-connection($text) + let $categories := $response/query/results/yahoo:yctCategories/yahoo:yctCategory + return if ( $categories ) then + for $category in $categories + return <ex:category>{ $category/text() }</ex:category> + else () +}; + +(:~ + : Uses Yahoo's Content Analysis webservice to return a list of relations (entities found and related wikipedia links) + : encountered in the text supplied as input. + : See http://developer.yahoo.com/search/content/V2/contentAnalysis.html for more information. + : + : @param $text String to be analyzed + : @return Sequence of recognized relations + : @example test/Queries/relations.xq + :) +declare %ann:sequential function ex:relations($text) as element(ex:relation)*{ + let $response := ex:server-connection($text) + let $relations := $response/query/results/yahoo:entities/yahoo:entity/yahoo:related_entities + return if ( $relations ) then + for $relation in $relations + return <ex:relation>{ + <ex:entity start="{$relation/../yahoo:text/@start}" end="{$relation/../yahoo:text/@end}">{ + if ( $relation/../yahoo:types ) then + for $type in $relation/../yahoo:types/yahoo:type + return <ex:type>{ replace($type/text(), '^/|^[a-zA-Z]*:/','') }</ex:type> + else () + } + { $relation/../yahoo:text/text() }</ex:entity> + union + (for $link in $relation/yahoo:wikipedia/yahoo:wiki_url + return <ex:wikipedia_url>{$link/text()}</ex:wikipedia_url>) + }</ex:relation> + else () +}; + +(:~ + : Uses Yahoo's Content Analysis webservice to return a list of concepts (entity found and the corresponding wikipedia link) + : encountered in the text supplied as input. + : See http://developer.yahoo.com/search/content/V2/contentAnalysis.html for more information. + : + : @param $text String to be analyzed + : @return Sequence of recognized concepts + : @example test/Queries/concepts.xq + :) +declare %ann:sequential function ex:concepts($text) as element(ex:concept)*{ + let $response := ex:server-connection($text) + let $concepts := $response/query/results/yahoo:entities/yahoo:entity/yahoo:wiki_url + return if ( $concepts ) then + for $link in $concepts + order by xs:integer($link/../yahoo:text/@start) + return <ex:concept>{ + <ex:entity start="{$link/../yahoo:text/@start}" end="{$link/../yahoo:text/@end}">{ + if ( $link/../yahoo:types ) then + for $type in $link/../yahoo:types/yahoo:type + return <ex:type>{ replace($type/text(), '^/|^[a-zA-Z]*:/','') }</ex:type> + else () + } + { $link/../yahoo:text/text() }</ex:entity> + union + (<ex:wikipedia_url>{$link[1]/text()}</ex:wikipedia_url>) + }</ex:concept> + else () +}; + +(:~ + : Uses Yahoo's Content Analysis webservice to return the text supplied as input + : together with entities recognized annotated as xml elements in the text. + : + : @param $text String to be analyzed + : @return Mixed sequence of strings and <ex:entity> elements + : @example test/Queries/entities-inline.xq + :) +declare %ann:sequential function ex:entities-inline($text) as item()*{ + ex:entity-inline-annotation($text , ex:entities($text), 0) +}; + +(:~ + : Uses Yahoo's Content Analysis webservice to return the text supplied as input + : together with concepts (entities with corresponding wikipedia link) annotated + : as xml elements in the text. + : + : @param $text String to be analyzed + : @return Mixed sequence of strings and <ex:concept> elements + : @example test/Queries/concepts-inline.xq + :) +declare %ann:sequential function ex:concepts-inline($text) as item()*{ + ex:concept-inline-annotation($text , ex:concepts($text), 0) +}; + +(:~ + : Creates entities inline annotations in a given string + : + : @param $text String to be analyzed + : @param $entities list of entities found in the given string + : @param $size size of the remaining string + : @return Mixed sequence of strings and <ex:entity> elements + :) +declare %private function ex:entity-inline-annotation($text, $entities, $size) as item()*{ + if ( count($entities) = 0 ) then $text + else(substring($text, 0, ($entities[1]/@start) +1 -$size), + if ( count( $entities[1]/ex:type) >= 1 ) then + <ex:entity start="{$entities[1]/@start}" end="{$entities[1]/@end}" type="{$entities[1]/ex:type[1]}"> {$entities[1]/text()} </ex:entity> + else $entities[1], + ex:entity-inline-annotation(substring($text, ($entities[1]/@end)+2 -$size), $entities[position() >1], ($entities[1]/@end)+1)) +}; + +(:~ + : Creates concepts inline annotations in a given string + : + : @param $text String to be analyzed + : @param $concepts list of concepts found in the given string + : @param $size size of the remaining string + : @return Mixed sequence of strings and <ex:concept> elements + :) +declare %private function ex:concept-inline-annotation($text, $concepts, $size) as item()*{ + if ( count($concepts) = 0 ) then $text + else(substring($text, 0, ($concepts[1]/ex:entity/@start) +1 -$size), + if ( count( $concepts[1]/ex:wikipedia_url ) >= 1 ) + then <ex:concept xmlns:ex="http://www.zorba-xquery.com/modules/info-extraction"; start="{$concepts[1]/ex:entity/@start}" end="{$concepts[1]/ex:entity/@end}" url="{$concepts[1]/ex:wikipedia_url[1]/text()}">{$concepts[1]/ex:entity/text()}</ex:concept> + else $concepts[1]/ex:entity, + ex:concept-inline-annotation(substring($text, ($concepts[1]/ex:entity/@end) +2 -$size), $concepts[position() >1], ($concepts[1]/ex:entity/@end) +1)) +}; + +(:~ + : Establishes connection with the Yahoo Server + : + : @param $text String to be analyzed + : @return XML document returned by the Yahoo Server + :) +declare %private %ann:sequential function ex:server-connection($text as xs:string){ + let $uri := iri-to-uri(concat("q=select * from contentanalysis.analyze where text=", + concat(""", concat(replace(normalize-space($text), """, "'"), """)))) + let $req := + <h:request method="POST" href="http://query.yahooapis.com/v1/public/yql";> + <h:header name="Connection" value="keep-alive"/> + <h:body media-type="application/x-www-form-urlencoded"> + {$uri} + </h:body> + </h:request> + let $response := http:send-request($req, (), ()) + return if ($response[1]/@status = 200) + then $response[2] + else () +}; === added file 'src/info-extraction-module.xsd' --- src/info-extraction-module.xsd 1970-01-01 00:00:00 +0000 +++ src/info-extraction-module.xsd 2013-06-24 09:52:30 +0000 @@ -0,0 +1,42 @@ +<?xml version="1.0" encoding="UTF-8"?> +<xs:schema xmlns:xs="http://www.w3.org/2001/XMLSchema"; + xmlns="http://www.zorba-xquery.com/modules/info-extraction"; + targetNamespace="http://www.zorba-xquery.com/modules/info-extraction"; + elementFormDefault="qualified"> + + <xs:element name="wikipedia_url" type="xs:string"/> + <xs:element name="category" type="xs:string"/> + + <xs:element name="entity"> + <xs:complexType mixed="true"> + <xs:sequence> + <xs:element name="type" type="xs:string" minOccurs="0" maxOccurs="unbounded"/> + </xs:sequence> + <xs:attribute name="start" type="xs:integer" use="required"/> + <xs:attribute name="end" type="xs:integer" use="required"/> + <xs:attribute name="type" type="xs:string"/> + </xs:complexType> + </xs:element> + + <xs:element name="concept"> + <xs:complexType mixed="true"> + <xs:sequence> + <xs:element ref="entity" minOccurs="0" maxOccurs="1"/> + <xs:element ref="wikipedia_url" minOccurs="0" maxOccurs="1"/> + </xs:sequence> + <xs:attribute name="start" type="xs:integer"/> + <xs:attribute name="end" type="xs:integer"/> + <xs:attribute name="url" type="xs:string"/> + </xs:complexType> + </xs:element> + + <xs:element name="relation"> + <xs:complexType> + <xs:sequence> + <xs:element ref="entity" minOccurs="1" maxOccurs="1"/> + <xs:element ref="wikipedia_url" minOccurs="1" maxOccurs="unbounded"/> + </xs:sequence> + </xs:complexType> + </xs:element> + +</xs:schema> === added directory 'test' === renamed directory 'test' => 'test.moved' === added directory 'test/ExpQueryResults' === added file 'test/ExpQueryResults/categories.xml.res' --- test/ExpQueryResults/categories.xml.res 1970-01-01 00:00:00 +0000 +++ test/ExpQueryResults/categories.xml.res 2013-06-24 09:52:30 +0000 @@ -0,0 +1,2 @@ +<?xml version="1.0" encoding="UTF-8"?> +true \ No newline at end of file === added file 'test/ExpQueryResults/concepts-inline.xml.res' --- test/ExpQueryResults/concepts-inline.xml.res 1970-01-01 00:00:00 +0000 +++ test/ExpQueryResults/concepts-inline.xml.res 2013-06-24 09:52:30 +0000 @@ -0,0 +1,2 @@ +<?xml version="1.0" encoding="UTF-8"?> +true === added file 'test/ExpQueryResults/concepts.xml.res' --- test/ExpQueryResults/concepts.xml.res 1970-01-01 00:00:00 +0000 +++ test/ExpQueryResults/concepts.xml.res 2013-06-24 09:52:30 +0000 @@ -0,0 +1,2 @@ +<?xml version="1.0" encoding="UTF-8"?> +true \ No newline at end of file === added file 'test/ExpQueryResults/entities-inline.xml.res' --- test/ExpQueryResults/entities-inline.xml.res 1970-01-01 00:00:00 +0000 +++ test/ExpQueryResults/entities-inline.xml.res 2013-06-24 09:52:30 +0000 @@ -0,0 +1,2 @@ +<?xml version="1.0" encoding="UTF-8"?> +true === added file 'test/ExpQueryResults/entities.xml.res' --- test/ExpQueryResults/entities.xml.res 1970-01-01 00:00:00 +0000 +++ test/ExpQueryResults/entities.xml.res 2013-06-24 09:52:30 +0000 @@ -0,0 +1,2 @@ +<?xml version="1.0" encoding="UTF-8"?> +true \ No newline at end of file === added file 'test/ExpQueryResults/relations.xml.res' --- test/ExpQueryResults/relations.xml.res 1970-01-01 00:00:00 +0000 +++ test/ExpQueryResults/relations.xml.res 2013-06-24 09:52:30 +0000 @@ -0,0 +1,2 @@ +<?xml version="1.0" encoding="UTF-8"?> +true \ No newline at end of file === added directory 'test/Queries' === added file 'test/Queries/categories.xq' --- test/Queries/categories.xq 1970-01-01 00:00:00 +0000 +++ test/Queries/categories.xq 2013-06-24 09:52:30 +0000 @@ -0,0 +1,17 @@ +import module namespace ex = 'http://www.zorba-xquery.com/modules/info-extraction'; + +import schema namespace schema = 'http://www.zorba-xquery.com/modules/info-extraction'; + +let $result := ex:categories("President Obama called Wednesday on Congress to extend a tax break for students included in last year's economic stimulus package, arguing that the policy provides more generous assistance.") + +return count ( for $c in $result return validate { $c } ) > 0 + +(: + +<?xml version="1.0" encoding="UTF-8"?> +<!-- The ex:categories function should return the following list of results for the input provided in the example --> +<ex:category xmlns:ex="http://www.zorba-xquery.com/modules/info-extraction";>Politics & Government</ex:category> +<ex:category xmlns:ex="http://www.zorba-xquery.com/modules/info-extraction";>Budget, Tax & Economy</ex:category> +<ex:category xmlns:ex="http://www.zorba-xquery.com/modules/info-extraction";>Government</ex:category> + +:) === added file 'test/Queries/concepts-inline.xq' --- test/Queries/concepts-inline.xq 1970-01-01 00:00:00 +0000 +++ test/Queries/concepts-inline.xq 2013-06-24 09:52:30 +0000 @@ -0,0 +1,15 @@ +import module namespace ex = 'http://www.zorba-xquery.com/modules/info-extraction'; + +import schema namespace schema = 'http://www.zorba-xquery.com/modules/info-extraction'; + +let $result := ex:concepts-inline("President Obama called Wednesday on Congress to extend a tax break for students included in last year's economic stimulus package, arguing that the policy provides more generous assistance.") + +return count ( for $c in <aux>{$result}</aux>/ex:concept return validate { $c } ) > 0 + +(: + +<?xml version="1.0" encoding="UTF-8"?> +<!-- The ex:concepts-inline function should return the following list of results for the input provided in the example --> +President Obama called Wednesday on <concept start="36" end="43" url="http://en.wikipedia.com/wiki/United_States_Congress";>Congress</concept> to extend a tax break for students included in last year's economic stimulus package, arguing that the policy provides more generous assistance. + +:) === added file 'test/Queries/concepts.xq' --- test/Queries/concepts.xq 1970-01-01 00:00:00 +0000 +++ test/Queries/concepts.xq 2013-06-24 09:52:30 +0000 @@ -0,0 +1,23 @@ +import module namespace ex = 'http://www.zorba-xquery.com/modules/info-extraction'; + +import schema namespace schema = 'http://www.zorba-xquery.com/modules/info-extraction'; + +let $result := ex:concepts("President Obama called Wednesday on Congress to extend a tax break for students included in last year's economic stimulus package, arguing that the policy provides more generous assistance.") + +return count ( for $c in $result return validate { $c } ) > 0 + +(: + +<?xml version="1.0" encoding="UTF-8"?> +<!-- The ex:concepts function should return the following list of results for the input provided in the example --> +<ex:concept xmlns:ex="http://www.zorba-xquery.com/modules/info-extraction";> + <ex:entity start="0" end="14">President Obama</ex:entity> + <ex:wikipedia_url>http://en.wikipedia.com/wiki/Barack_Obama</ex:wikipedia_url> +</ex:concept> +<ex:concept xmlns:ex="http://www.zorba-xquery.com/modules/info-extraction";> + <ex:entity start="36" end="43"> + <ex:type>organization</ex:type>Congress</ex:entity> + <ex:wikipedia_url>http://en.wikipedia.com/wiki/United_States_Congress</ex:wikipedia_url> +</ex:concept> + +:) === added file 'test/Queries/entities-inline.xq' --- test/Queries/entities-inline.xq 1970-01-01 00:00:00 +0000 +++ test/Queries/entities-inline.xq 2013-06-24 09:52:30 +0000 @@ -0,0 +1,15 @@ +import module namespace ex = 'http://www.zorba-xquery.com/modules/info-extraction'; + +import schema namespace schema = 'http://www.zorba-xquery.com/modules/info-extraction'; + +let $result := ex:entities-inline("President Obama called Wednesday on Congress to extend a tax break for students included in last year's economic stimulus package, arguing that the policy provides more generous assistance.") + +return count ( for $c in <aux>{$result}</aux>/ex:entity return validate { $c } ) > 0 + +(: + +<?xml version="1.0" encoding="UTF-8"?> +<!-- The ex:entities-inline function should return the following list of results for the input provided in the example --> +<ex:entity xmlns:ex="http://www.zorba-xquery.com/modules/info-extraction"; start="0" end="14">President Obama</ex:entity> called Wednesday on <ex:entity xmlns:ex="http://www.zorba-xquery.com/modules/info-extraction"; start="36" end="43" type="organization">Congress</ex:entity> to extend a <ex:entity xmlns:ex="http://www.zorba-xquery.com/modules/info-extraction"; start="57" end="65">tax break</ex:entity> for students included in last year's <ex:entity xmlns:ex="http://www.zorba-xquery.com/modules/info-extraction"; start="104" end="128">economic stimulus package</ex:entity>, arguing that the policy provides more <ex:entity xmlns:ex="http://www.zorba-xquery.com/modules/info-extraction"; start="169" end="187">generous assistance</ex:entity>. + +:) === added file 'test/Queries/entities.xq' --- test/Queries/entities.xq 1970-01-01 00:00:00 +0000 +++ test/Queries/entities.xq 2013-06-24 09:52:30 +0000 @@ -0,0 +1,20 @@ +import module namespace ex = 'http://www.zorba-xquery.com/modules/info-extraction'; + +import schema namespace schema = 'http://www.zorba-xquery.com/modules/info-extraction'; + +let $result := ex:entities("President Obama called Wednesday on Congress to extend a tax break for students included in last year's economic stimulus package, arguing that the policy provides more generous assistance.") + +return count ( for $e in $result return validate { $e } ) > 0 + +(: + +<?xml version="1.0" encoding="UTF-8"?> +<!-- The ex:entities function should return the following list of results for the input provided in the example --> +<ex:entity xmlns:ex="http://www.zorba-xquery.com/modules/info-extraction"; start="0" end="14">President Obama</ex:entity> +<ex:entity xmlns:ex="http://www.zorba-xquery.com/modules/info-extraction"; start="36" end="43"> + <ex:type>organization</ex:type>Congress</ex:entity> +<ex:entity xmlns:ex="http://www.zorba-xquery.com/modules/info-extraction"; start="57" end="65">tax break</ex:entity> +<ex:entity xmlns:ex="http://www.zorba-xquery.com/modules/info-extraction"; start="104" end="128">economic stimulus package</ex:entity> +<ex:entity xmlns:ex="http://www.zorba-xquery.com/modules/info-extraction"; start="169" end="187">generous assistance</ex:entity> + +:) === added file 'test/Queries/relations.xq' --- test/Queries/relations.xq 1970-01-01 00:00:00 +0000 +++ test/Queries/relations.xq 2013-06-24 09:52:30 +0000 @@ -0,0 +1,31 @@ +import module namespace ex = 'http://www.zorba-xquery.com/modules/info-extraction'; + +import schema namespace schema = 'http://www.zorba-xquery.com/modules/info-extraction'; + +let $result := ex:relations("President Obama called Wednesday on Congress to extend a tax break for students included in last year's economic stimulus package, arguing that the policy provides more generous assistance.") + +return count ( for $r in $result return validate { $r } ) > 0 + +(: + +<?xml version="1.0" encoding="UTF-8"?> +<!-- The ex:relations function should return the following list of results for the input provided in the example --> +<ex:relation xmlns:ex="http://www.zorba-xquery.com/modules/info-extraction";> + <ex:entity start="0" end="14">President Obama</ex:entity> + <ex:wikipedia_url>http://en.wikipedia.com/wiki/Gabrielle_Giffords</ex:wikipedia_url> + <ex:wikipedia_url>http://en.wikipedia.com/wiki/2011_Tucson_shooting</ex:wikipedia_url> + <ex:wikipedia_url>http://en.wikipedia.com/wiki/Fray</ex:wikipedia_url> + <ex:wikipedia_url>http://en.wikipedia.com/wiki/White_House</ex:wikipedia_url> + <ex:wikipedia_url>http://en.wikipedia.com/wiki/Recall_%28memory%29</ex:wikipedia_url> +</ex:relation> +<ex:relation xmlns:ex="http://www.zorba-xquery.com/modules/info-extraction";> + <ex:entity start="36" end="43"> + <ex:type>organization</ex:type>Congress</ex:entity> + <ex:wikipedia_url>http://en.wikipedia.com/wiki/Republican_Party_%28United_States%29</ex:wikipedia_url> + <ex:wikipedia_url>http://en.wikipedia.com/wiki/Barack_Obama</ex:wikipedia_url> + <ex:wikipedia_url>http://en.wikipedia.com/wiki/Roger_Clemens</ex:wikipedia_url> + <ex:wikipedia_url>http://en.wikipedia.com/wiki/Democratic_Party_%28United_States%29</ex:wikipedia_url> + <ex:wikipedia_url>http://en.wikipedia.com/wiki/Growth_hormone</ex:wikipedia_url> +</ex:relation> + +:)
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