What is the {human subject research} for {time period} of {World War II}
What sort of human inquire about was carried out amid World War II?
What type of human research was carried out during World War II?
SELECT DISTINCT ?u WHERE { ?u rdf:type ontology:human_subject_research . ?u property:time_period resource:World_War_II }
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/P2348> . ?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#object> <http://wikidata.dbpedia.org/resource/Q362> . ?subj <http://www.wikidata.org/entity/P31> <http://wikidata.dbpedia.org/resource/Q1331083> } 
 select distinct ?sbj where { ?sbj wdt:P2348 wd:Q362 . ?sbj wdt:P31 wd:Q1331083 } 