Question: Give me a list of all trumpet players that were bandleaders.
SPARQL:
PREFIX dbo: <http://dbpedia.org/ontology/> PREFIX res: <http://dbpedia.org/resource/> PREFIX rdfs: <http://www.w3.org/2000/01/rdf-schema#> SELECT DISTINCT ?uri ?string WHERE { ?uri dbo:occupation res:Bandleader . ?uri dbo:instrument res:Trumpet . OPTIONAL { ?uri rdfs:label ?string. FILTER (lang(?string) = 'en') } }