PREFIX ex: <http://example.org/ns#>
CONSTRUCT {
   _:a ex:pred1 "hello" .
   _:b <http://example.org/ns#pred2> "val" .
   _:c ex:pred3 _:d .
   ex:thing1 ex:pred4 _:e .
   <http://example.org/ns#thing2> ex:pred5 _:f .
   <http://example.org/ns#thing3> ex:pred6 <http://example.org/ns#thing4> .
   <http://example.org/ns#thing5> <http://example.org/ns#pred7> <http://example.org/ns#thing6> .
   }
FROM <data.n3>
WHERE { ?x ?y ?z }