SELECT DISTINCT ?uri WHERE { ?x <http://dbpedia.org/property/design> <http://dbpedia.org/resource/Cable-stayed_bridge> . ?x <http://dbpedia.org/property/crosses> ?uri . }
Over which things, does a cable stayed bridge exists?
SELECT DISTINCT ?w WHERE { ?s property:crosses ?w . . ?s property:design resource:Cable-stayed_bridge }
answer
The things crossed by cable-stayed bridges are [answer].
What crosses the cable bridges is [the answer].