Hi,
I tried to use the Wikidata LDF endpoint [1] to access label data about individual entities instead of using the SPARQL endpoint (possibly unreliable) or looking up URIs directly (which can be very slow when there are lots of statements about the entity).
But I noticed that the LDF endpoint doesn't know about the language tags for labels, which makes the service a bit pointless for me, as I'm interested in the labels in a specific language.
For example, the first example query in the WDQS User Manual section on the LDF endpoint [2], about the entity Q146 (cat), returns triples like this:
Q146 label "பூனை"^^http://www.w3.org/1999/02/22-rdf-syntax-ns#langString. Q146 label "amcic"^^http://www.w3.org/1999/02/22-rdf-syntax-ns#langString. Q146 label "chat"^^http://www.w3.org/1999/02/22-rdf-syntax-ns#langString. Q146 label "gat"^^http://www.w3.org/1999/02/22-rdf-syntax-ns#langString.
All the label and description values have the data type rdf:langString and no language tag. I suspect this is somehow related to RDF 1.1, which introduced the langString data type.
Any chance of having this fixed or should I just rely on the other endpoints?
Best, Osma
[1] https://query.wikidata.org/bigdata/ldf
[2] https://www.mediawiki.org/wiki/Wikidata_Query_Service/User_Manual#Linked_Dat...