# query-se-bNode-type-var -- Counting semantics - queried with a bNode subject
# $Id: query-se-bNode-join.rq,v 1.1 2006/10/09 14:18:04 eric Exp $

PREFIX foaf: <http://xmlns.com/foaf/0.1/>
SELECT ?who ?whom
WHERE { _:who foaf:mbox ?who
	OPTIONAL { _:who foaf:knows _:whom .
		   _:whom foaf:mbox ?whom } }