return input ;
boolean hideBNodeVars = execCxt.getContext().isTrue(ARQ.hideNonDistiguishedVariables) ;
StageGenerator gen = StageBuilder.executeInline ;
QueryIterator qIter = gen.execute(pattern, input, execCxt) ;
// Remove non-distinguished variables here.
// Project out only named variables.
if (hideBNodeVars)
qIter = new QueryIterDistinguishedVars(qIter, execCxt) ;