What is the {human} for {depicts} of {Mona Lisa}
Who is the individual that's portrayed as Mona Lisa?
Who is the person that is depicted as Mona Lisa?
SELECT DISTINCT ?z WHERE { resource:Mona_Lisa property:depicts ?z . ?z rdf:type ontology:human }
select distinct ?obj where { ?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#subject> <http://wikidata.dbpedia.org/resource/Q12418> . ?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#predicate> <http://www.wikidata.org/entity/P180> . ?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#object> ?obj . ?obj <http://www.wikidata.org/entity/P31> <http://wikidata.dbpedia.org/resource/Q5> } 
 select distinct ?obj where { wd:Q12418 wdt:P180 ?obj . ?obj wdt:P31 wd:Q5 } 
Lisa del Giocondo