Question: In how many states can one find Burr Tuss kind of bridges?
SPARQL query:
PREFIX rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#>
PREFIX prop: <http://dbpedia.org/property/>
PREFIX onto: <http://dbpedia.org/ontology/>
SELECT DISTINCT COUNT(?uri) WHERE { ?x prop:style <http://dbpedia.org/resource/Burr_Truss> . ?x onto:state ?uri  . ?uri rdf:type onto:Region}