What is the {human} for {website account on} of {YouTube}
What is the genuine individual site account of Youtube?
What is the real person website account of Youtube?
SELECT DISTINCT ?m WHERE { ?m property:website_account_on resource:YouTube . ?m rdf:type ontology:human }
select distinct ?subj where { ?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#subject> ?subj . ?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#predicate> <http://www.wikidata.org/entity/P553> . ?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#object> <http://wikidata.dbpedia.org/resource/Q866> . ?subj <http://www.wikidata.org/entity/P31> <http://wikidata.dbpedia.org/resource/Q5> } 
 select distinct ?sbj where { ?sbj wdt:P553 wd:Q866 . ?sbj wdt:P31 wd:Q5 } 