What is {position held} of {Shigeru Yoshida} that is {start time} is {1946-5-22} ?
What position did Shigeru Yoshida hold starting on 5-22-1946?
What position did Shigeru Yoshida hold beginning on 5-22-1946?
SELECT ?i WHERE { resource:Shigeru_Yoshida property:position_held ?v . FILTER ( CONTAINS ( YEAR ( ?o ) , '1946' ) ) . ?v property:start_time ?o . ?v property:position_held ?i }
select distinct ?obj  where {
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#subject> <http://wikidata.dbpedia.org/resource/Q301804> .
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#predicate> <http://www.wikidata.org/entity/P39> .
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#object> ?obj .
?statement <http://www.wikidata.org/entity/P580> <1946-5-22>
} 

SELECT ?obj WHERE { wd:Q301804 p:P39 ?s . ?s ps:P39 ?obj . ?s pq:P580 ?x filter(contains(YEAR(?x),'1946')) }