# $Id: ex3Q.n3 426 2004-12-07 16:10:42Z josd $
# PxButton | es  | euler ex3.n3 --nope --think --query ex3Q.n3
# PxButton | cwm | cwm ex3.n3 --think --query"=ex3Q.n3"

@prefix math: <http://www.w3.org/2000/10/swap/math#>.
@prefix q: <http://www.w3.org/2004/ql#>.
@prefix dc:  <http://purl.org/dc/elements/1.1/>.
@prefix ns:  <http://example.org/ns#>.

[]
q:select {<> q:answer (?title ?price)};
q:where  {?x dc:title ?title; ns:price ?price. ?price math:lessThan 30}.
