<http://example.com/Subj1> <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://example.com/Type> .
_:a <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://example.com/SubType> .
<http://example.com/Subj1> <http://example.com/ref> _:a .
<http://example.com/Subj1> <http://example.com/ref> <http://example.com/Subj2> .
<http://example.com/Subj2> <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://example.com/Type> .
<http://example.com/Subj2> <http://example.com/ref> <http://example.com/Subj1> .
