Hi Guillaume, Thanks for reporting the issue in the bug tracker. Is the link you have provided, https://phabricator.wikimedia.org/T2704, correct?
The last activity in that ticket was in 2014... Thanks, Maciej Gawinecki czw., 17 gru 2020 o 16:05 Maciej Gawinecki <[email protected]> napisał(a): > Hi, > > I am trying to get alternative names of given names in WikiData with the > following simple query: > > PREFIX ps: <http://www.wikidata.org/prop/direct/> > PREFIX wd: <http://www.wikidata.org/entity/> > PREFIX rdfs: <http://www.w3.org/2000/01/rdf-schema#> > CONSTRUCT {?s rdfs:label ?o} > WHERE { ?s ps:P31 wd:Q202444. ?s rdfs:label ?o} > LIMIT 1000 > > Initially, the query was much more complex, but I was getting time-outs on > the public WikiData SPARQL endpoint. I decided to use Linked Data Fragments > to offload some filtering from the server to the client. > > comunica-sparql "https://query.wikidata.org/bigdata/ldf"; -f query > > given_names.n3 > > (where "query" is a file with the SPARQL query shown above). > Unfortunately, the client tries to get output from the 3rd page, I am > getting the following error: > > Could not retrieve > https://query.wikidata.org/bigdata/ldf?subject=http%3A%2F%2Fwww.wikidata.org%2Fentity%2FQ21147790&predicate=http%3A%2F%2Fwww.w3.org%2F2000%2F01%2Frdf-schema%23label&page=3 > (500: unknown error) > > Following the link in fact returns HTTP 500 error with > > Error details > java.lang.IllegalStateException > > The link points to the 3rd page. It works if you try to go the second > page: > https://query.wikidata.org/bigdata/ldf?subject=http%3A%2F%2Fwww.wikidata.org%2Fentity%2FQ21147790&predicate=http%3A%2F%2Fwww.w3.org%2F2000%2F01%2Frdf-schema%23label&page=2 > > Is this a bug or a limitation of a service? > > With kind regards, > Maciej Gawinecki >
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