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