Question: What cities are around the valley bordering Lake Mead?
SPARQL query: SELECT DISTINCT ?uri WHERE { ?x <http://dbpedia.org/ontology/border> <http://dbpedia.org/resource/Lake_Mead> . ?x <http://dbpedia.org/ontology/city> ?uri  . ?x <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://dbpedia.org/ontology/Valley>}
Answer: The cities around the valley bordering Lake Meadare are [Las Vegas, Blue Diamond, Nevada, Henderson, Nevada, North Las Vegas, Nevada, Whitney, Nevada, Nevada, Callville Bay].