What is the {human} for {sibling} of {Frida Kahlo}
Who is Frida Kahlo's kin?
Who is Frida Kahlo's sibling?
SELECT DISTINCT ?j WHERE { ?j rdf:type ontology:human . ?j property:sibling resource:Frida_Kahlo }
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/P3373> . ?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#object> <http://wikidata.dbpedia.org/resource/Q5588> . ?subj <http://www.wikidata.org/entity/P31> <http://wikidata.dbpedia.org/resource/Q5> } 
 select distinct ?sbj where { ?sbj wdt:P3373 wd:Q5588 . ?sbj wdt:P31 wd:Q5 } 
Cristina Kahlo