This query page is designed to help you test OpenLink Virtuoso SPARQL protocol endpoint.
Consult the Virtuoso Wiki page describing the service or the Online Virtuoso Documentation section RDF Database and SPARQL.

There is also a rich Web based user interface with sample queries. In order to use it you must install the iSPARQL package (isparql_dav.vad).

For your convenience we have a set of predefined name space prefixes and inference rules


(Security restrictions of this server do not allow you to retrieve remote RDF data. Database administrator can change them, accodring to these instructions.)

                 (The CXML output is disabled, see details)