Question: Who has built the stadiums which were rented by the Central american games of 2013?
SPARQL:
SELECT DISTINCT ?uri WHERE { ?x <http://dbpedia.org/ontology/tenant> <http://dbpedia.org/resource/2013_Central_American_Games> . ?x <http://dbpedia.org/ontology/builder> ?uri  . ?x <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://dbpedia.org/ontology/Stadium>}