<http://example.org/node2> <http://example.org/ns/prop2> "literal" .
<http://example.org/node1> <http://example.org/ns/prop1> <http://example.org/node2> .
<http://example.org/node2> <http://example.org/ns/prop2> "literal" .
<http://example.org/node1> <http://example.org/ns/prop1> <http://example.org/node2> .