SELECT DISTINCT COUNT(?uri) WHERE { ?x <http://dbpedia.org/ontology/builder> <http://dbpedia.org/resource/United_States> . ?x <http://dbpedia.org/ontology/builder> ?uri }
What is the total number of builder of the military structures whose builder is also United States?
SELECT DISTINCT COUNT ( ?c ) WHERE { ?w property:builder resource:United_States . ?w property:builder ?c }
70
There are [70] builders of the military structures whose one builder is United States.
There are [70] builders of military installations whose only builder is the United States.