Question: Which capitals in Europe were host cities of the summer olympic games?
SPARQL:
PREFIX rdfs: <http://www.w3.org/2000/01/rdf-schema#> PREFIX rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#> PREFIX yago: <http://dbpedia.org/class/yago/> SELECT ?uri ?string WHERE { ?uri rdf:type yago:CapitalsInEurope . ?uri rdf:type yago:HostCitiesOfTheSummerOlympicGames . OPTIONAL {?uri rdfs:label ?string . FILTER (lang(?string) = 'en') } }