jena-arq/testing/ARQ/Optimization/opt-equals-09.rq - jena - Git at Google

 PREFIX : <http://example/>

 SELECT *
 {
   OPTIONAL {
     {
     ?x :p ?v .
     FILTER (?v = :z )
     }
   }
 }
	PREFIX : <http://example/>

	SELECT *
	{
	OPTIONAL {
	{
	?x :p ?v .
	FILTER (?v = :z )
	}
	}
	}