Question: Which horses did The Long Fellow ride?
SPARQL:
PREFIX dbo: <http://dbpedia.org/ontology/>
PREFIX rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#>
SELECT DISTINCT ?uri 
WHERE {
        ?x text:"known as" text:"The Long Fellow" .
        ?x dbo:raceHorse ?uri .
}