Hi all,
Has anyone an idea how to optimize a query like this one:
SELECT DISTINCT ?order ?label WHERE
{
?species rdf:type dbpedia-owl:Species .
?species dbpedia-owl:order ?order .
?order rdfs:label ?label FILTER(LANG(?label) = "en") .
}
I'm trying to get the order attribute of all species but the query always times
out at the dbpedia SPARQL endpoint. Removing the FILTER constraint or DISTINCT
makes the query work but also retrieves a lot of (in my case) irrelevant
results.
Thanks for help.
Regards,
Sören
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