<http://jena/resource1> <http://jena/property1> "LITERAL-1a" .
<http://jena/resource1> <http://jena/property1> "LITERAL-1b" .
<http://jena/resource1> <http://jena/property2> _:a .
_:a  <http://jena/property3> "LITERAL-2" .

_:a  <http://jena/property4> _:b .
_:a  <http://jena/property5> _:b .

<http://jena/resource2> <http://jena/property6> _:a .
<http://jena/resource2> <http://jena/property6> "LITERAL-4" .