jena-tdb/testing/UnionGraph/merge-4.rq - jena - Git at Google

 PREFIX :    <http://example/>
 PREFIX arq: <urn:x-arq:>

 SELECT *
 {
     GRAPH arq:UnionGraph
     { ?s ?p ?o . OPTIONAL { ?o ?q ?z } }
 }
	PREFIX : <http://example/>
	PREFIX arq: <urn:x-arq:>

	SELECT *
	{
	GRAPH arq:UnionGraph
	{ ?s ?p ?o . OPTIONAL { ?o ?q ?z } }
	}