Question: List the destinations of the airlines which also serves Mediterranean  Sea ?
SPARQL:
SELECT DISTINCT ?uri WHERE { ?x <http://dbpedia.org/property/destinations> <http://dbpedia.org/resource/Mediterranean_Sea> . ?x <http://dbpedia.org/property/destinations> ?uri . ?x <http://www.w3.org/1999/02/22-rdf-syntax-ns#type> <http://dbpedia.org/ontology/Airline>}