Question: Where is the sister station of Al Arabiya 99 located?
SPARQL:
SELECT DISTINCT ?uri WHERE { ?x <http://dbpedia.org/property/sisterStations> <http://dbpedia.org/resource/Al_Arabiya_99> . ?x <http://dbpedia.org/property/location> ?uri  . ?x <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://dbpedia.org/ontology/RadioStation>}