<http://example.com/person/3> <http://example.com/prop> <http://example.com/guest> .
<http://example.com/article> <http://example.com/author> <http://example.com/person/1> .
<http://example.com/article> <http://example.com/author> <http://example.com/person/3> .
<http://example.com/article> <http://example.com/author> <http://example.com/person/2> .
<http://example.com/person/2> <http://example.com/prop> <http://example.com/guest> .
