What is the {human} for {student of} of {Ivan Pavlov}
Who is the individual that was a understudy of Ivan Pavlov?
Who is the person that was a student of Ivan Pavlov?
SELECT DISTINCT ?t WHERE { ?t rdf:type ontology:human . ?t property:student_of resource:Ivan_Pavlov }
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/P1066> . ?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#object> <http://wikidata.dbpedia.org/resource/Q42985> . ?subj <http://www.wikidata.org/entity/P31> <http://wikidata.dbpedia.org/resource/Q5> } 
 select distinct ?sbj where { ?sbj wdt:P1066 wd:Q42985 . ?sbj wdt:P31 wd:Q5 } 
Konstantin Bykov Leon Orbeli Pyotr Anokhin Boris Babkin Nikolay Voytsekhovsky Viktorin S. Derjabin Nikolay Krasnogorskiy Takatarō Kigi Petr Stepanovič Kupalov Davyd Hlinski