SELECT DISTINCT ?uri WHERE { ?x <http://dbpedia.org/property/design> <http://dbpedia.org/resource/Box_girder_bridge> . ?x <http://dbpedia.org/property/crosses> ?uri . }
What are some rivers over which there is a box girder bridge?
SELECT DISTINCT ?j WHERE { ?h property:crosses ?j . . ?h property:design resource:Box_girder_bridge }
answer
The crosses of the bridges designed by Box girder bridge are [answer].
Bridge crossings designed by the Box-border bridge - [answer].