On 3/20/11 9:59 AM, Danny Ayers wrote:
(Not sure which list is most appropriate - please advise)
I'm getting a lot of errors querying against:
http://www4.wiwiss.fu-berlin.de/factbook/sparql
while some queries work, e.g.
PREFIX rdfs:<http://www.w3.org/2000/01/rdf-schema#>
SELECT DISTINCT ?s WHERE {
?s rdfs:label ?label .
FILTER REGEX(?label, "libya", "i")
}
many others fail, e.g.
PREFIX rdfs:<http://www.w3.org/2000/01/rdf-schema#>
SELECT DISTINCT * WHERE {
<http://www4.wiwiss.fu-berlin.de/factbook/resource/Libya> ?p ?o
}
=>
...
<h2>HTTP ERROR: 500</h2><pre>rethrew:
de.fuberlin.wiwiss.d2rq.D2RQException: Table 'factbook.neighbors'
doesn't exist: SELECT DISTINCT `T0_neighbors`.`name_encoded` FROM
`bordercountries` AS `T0_bordercountries`, `neighbors` AS
`T0_neighbors`, `countries` AS `T0_countries` WHERE
`T0_bordercountries`.`Landboundaries_bordercountries_title` =
`T0_neighbors`.`Name` AND `T0_bordercountries`.`Name` =
`T0_countries`.`Name` AND `T0_countries`.`name_encoded` = 'Libya'
(E0)</pre>
<p>RequestURI=/sparql</p><p><i><small><a
href="http://jetty.mortbay.org/";>Powered by Jetty://</a>
...
Cheers,
Danny.
Danny,
Is this just a ping to Chris and co. about their particular Linked Data
Space or a quest for detailed information about 'Libya' ?
Assuming this is a quest for information about 'Libya' across LOD
datasets, you can also look at:
1.
http://lod.openlinksw.com/describe/?uri=http%3A%2F%2Fdbpedia.org%2Fresource%2FLibya
-- 6 pages of facts about an entity associated with 'Libya'
2.
http://lod.openlinksw.com/fct/rdfdesc/usage.vsp?g=http%3A%2F%2Fdbpedia.org%2Fresource%2FLibya&tp=2
-- source graph IRIs
3.
http://lod.openlinksw.com/fct/rdfdesc/usage.vsp?g=http%3A%2F%2Fdbpedia.org%2Fresource%2FLibya&tp=3
-- lists of IRI/URIs that have selected entity associated with 'Libya'
as co-referent
4.
http://lod.openlinksw.com/fct/rdfdesc/usage.vsp?g=http%3A%2F%2Fdbpedia.org%2Fresource%2FLibya&tp=4
-- co referent lists assembled via a fuzzy IFP rule using foaf:name .
--
Regards,
Kingsley Idehen
President& CEO
OpenLink Software
Web: http://www.openlinksw.com
Weblog: http://www.openlinksw.com/blog/~kidehen
Twitter/Identi.ca: kidehen
