Question: Give me all soccer clubs in the Premier League.
SPARQL:
PREFIX rdfs: <http://www.w3.org/2000/01/rdf-schema#>
PREFIX onto: <http://dbpedia.org/ontology/>
PREFIX resource: <http://dbpedia.org/resource/>
SELECT DISTINCT ?uri ?string
WHERE
{ 
   ?uri onto:league resource:Premier_League . 
   OPTIONAL {?uri rdfs:label ?string . FILTER (lang(?string) = 'en') }
}