What is the {human} for {patient of} of {J. R. R. Tolkien}
Who were J. R. R. Tolkien's guardians?
Who were J. R. R. Tolkien's parents?
SELECT DISTINCT ?c WHERE { ?c rdf:type ontology:human . resource:J. R. R._Tolkien property:patient_of ?c }
select distinct ?obj where { ?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#subject> <http://wikidata.dbpedia.org/resource/Q892> . ?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#predicate> <http://www.wikidata.org/entity/P3205> . ?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:Q892 wdt:P3205 ?obj . ?obj wdt:P31 wd:Q5 } 
Robert Havard