Cassio,
Yes, the Freebase datasets are loaded into the lod.openlinksw.com LOD cloud
cache, executing a simple query against the SPARQL endpoint
(http://lod.openlinksw.com/sparql) of the following form returns results:
SELECT * from <http://freebase.com> WHERE {?s ?p ?o} Limit 10
Or perform a search for freebase against its facet browser interface at:
http://lod.openlinksw.com/
Best Regards
Hugh Williams
Professional Services
OpenLink Software
Web: http://www.openlinksw.com
Support: http://support.openlinksw.com
Forums: http://boards.openlinksw.com/support
Twitter: http://twitter.com/OpenLink
On 20 Jun 2010, at 20:48, cassio steel wrote:
> Hello everyone
> how you know you can write a query on LOD using the openLink Virtuoso SPARQL
> end-point ( http://lod.openlinksw.com/sparql ).
> My question is: Does this end-point support freebase?
> I tried to run this query:
>
> PREFIX owl: <http://www.w3.org/2002/07/owl#>
> PREFIX rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#>
> PREFIX fb-film: <http://rdf.freebase.com/ns/film.film.>
> SELECT ?uriFB WHERE {
> <http://dbpedia.org/resource/E.T._the_Extra-Terrestrial> owl:sameAs ?uriFB .
> ?uriFB fb-film:tagline ?tagL
> FILTER regex(str(?uriFB),"freebase")
> }
> LIMIT 100
>
> but I have an empty result set, just like running any query which involves
> freebase. Is there any way to interrogate freebase from an end-point?
> Thank you for your answers.
>
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