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พีชคณิต

PREFIX  foaf: <http://xmlns.com/foaf/spec/>

SELECT  *
WHERE
  { ?s ?p ?o
    FILTER ( ( ?p = foaf:name ) && ( ?o = "Angela                                    Merkel"@en ) )
  }

คอมไพล์เป็น

(base <http://example/base/>
  (prefix ((foaf: <http://xmlns.com/foaf/spec/>))
    (filter (&& (= ?p foaf:name) (= ?o "Angela                                     Merkel"@en))
      (bgp (triple ?s ?p ?o)))))


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