Question: In how many places can I find people who were the architects of the Dundas Castle?
SPARQL:
SELECT DISTINCT COUNT(?uri) WHERE { <http://dbpedia.org/resource/Dundas_Castle_(Roscoe,_New_York)> <http://dbpedia.org/property/architecture> ?x . ?x <http://dbpedia.org/property/region> ?uri  . }