On 12/1/11 11:27 AM, Hugh Williams wrote:
What is the version of the Virtuoso Server you are attempting to run your query 
against as the query you provide runs successfully for me, returning one row, 
against one of our demo server:

        
http://demo.openlinksw.com/sparql?default-graph-uri=&query=PREFIX+foaf%3A+%3Chttp%3A%2F%2Fxmlns.com%2Ffoaf%2F0.1%2F%3E%0D%0APREFIX+skos%3A%3Chttp%3A%2F%2Fwww.w3.org%2F2004%2F02%2Fskos%2Fcore%23%3E%0D%0ASELECT+%3Fs%0D%0AWHERE+%7B%0D%0ASERVICE+%3Chttp%3A%2F%2Fpoolparty.reegle.info%2FPoolParty%2Fsparql%2Fglossary%3E%7B%0D%0A+%3Fs+foaf%3Apage+%3Chttp%3A%2F%2Fen.wikipedia.org%2Fwiki%2FFuel_cell%3E+.%0D%0A+%3Fs+skos%3Adefinition+%3Fv+.%0D%0A%7D%0D%0A%7D&should-sponge=&format=text%2Fhtml&CXML_redir_for_subjs=121&CXML_redir_for_hrefs=&timeout=0&debug=on

Short URL:

        http://tinyurl.com/c26ovv6

So I assume you are running a Virtuoso version before full SPARQL-FED support 
was available. I would recommend you upgrade to the latest 6.1.4 open source 
release available from:

        http://virtuoso.openlinksw.com/dataspace/dav/wiki/Main/VOSDownload

Jon,

SPARQL-FED is now part of the Open Source edition of Virtuoso. That wasn't the case re. prior releases.


--

Regards,

Kingsley Idehen 
Founder&  CEO
OpenLink Software
Company Web: http://www.openlinksw.com
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