@prefix ex: <http://example.org/abc#> .
@prefix rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#> .

ex:r1 ex:prop "value 1" .
ex:r2 ex:prop "value 3" .
ex:r3 ex:prop "value 3" .
ex:r4 ex:prop "value 4" .
