select ?c, ?test, ?time
WHERE ( ?r perf:environment ?e ),
      ( ?e perf:title ?c ),
      ( ?r perf:tests ?a ),
      ( ?a perf:test  ?x ),
      ( ?x perf:averageTime ?time ),
      ( ?x perf:name ?test )
USING perf FOR <http://jena.hpl.hp.com/RDF/performance/>