Hi, I found that WDQS misses several sitelinks. I tried to query sitelinks via SPARQL: PREFIX schema: <http://schema.org/> SELECT ?qid { <https://en.wikipedia.org/wiki/Argon> schema:about ?qid } This works for the Wikipedia URL given above, but many other don't return a result, for instance: https://en.wikipedia.org/wiki/Getty_Thesaurus_of_Geographic_Names => should be http://www.wikidata.org/entity/Q1520117 https://en.wikipedia.org/wiki/BioPAX => should be http://www.wikidata.org/entity/Q4914639 https://en.wikipedia.org/wiki/Mathematics_Subject_Classification => should be http://www.wikidata.org/entity/Q967960 I also tried querying the other way round: PREFIX schema: <http://schema.org/> SELECT ?site{ ?site schema:about <http://www.wikidata.org/entity/Q967960> } It looks like the Blazegraph database does not contain all sitelinks. Jakob -- Jakob Voß &lt;jakob.voss(a)gbv.de&gt; Verbundzentrale des GBV (VZG) / Common Library Network Platz der Goettinger Sieben 1, 37073 Göttingen, Germany +49 (0)551 39-10242, http://www.gbv.de/