q-lang-1.rq

Jena推理机

PREFIX  jfn:  <java:com.hp.hpl.jena.query.function.library.>
PREFIX  rdfs: <http://www.w3.org/2000/01/rdf-schema#>

SELECT ?v
{ ?x ?p ?v .
  FILTER jfn:langeq(?v, "EN" )
}