What is <Sports-Reference.com Olympic athlete ID> of <Serena Williams> ?
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Tell me the Sports-Reference.com Olympic athlete ID of Serena Williams.
SELECT DISTINCT ?y WHERE { resource:Serena_Williams property:Sports-Reference.com_Olympic_athlete_ID ?y }
select distinct ?answer where { ?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#subject> <http://wikidata.dbpedia.org/resource/Q11459> . ?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#predicate> <http://www.wikidata.org/entity/P1447> . ?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#object> ?answer. }
select distinct ?answer where { wd:Q11459 wdt:P1447 ?answer}