What is the {human} for {student} of {Enrico Fermi}
Who was Enrico Fermi's understudy?
Who was Enrico Fermi's student?
SELECT DISTINCT ?s WHERE { ?s rdf:type ontology:human . resource:Enrico_Fermi property:student ?s }
select distinct ?obj where { ?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#subject> <http://wikidata.dbpedia.org/resource/Q8753> . ?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#predicate> <http://www.wikidata.org/entity/P802> . ?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:Q8753 wdt:P802 ?obj . ?obj wdt:P31 wd:Q5 } 
Murray Gell-Mann Chen-ning Yang