Question: What is the height difference between Mount Everest and K2?
SPARQL:
PREFIX dbo: <http://dbpedia.org/ontology/> PREFIX res: <http://dbpedia.org/resource/> SELECT DISTINCT (?h1-?h2) WHERE { res:Mount_Everest dbo:elevation ?h1 . res:K2 dbo:elevation ?h2 . }