What is {position held} of {Mustafa Kemal Atatürk} that is {start time} is {1920-5-3} ?
What is the position of Mustafa Kemal Atatürk that started May 3, 1920?
SELECT ?obj WHERE { wd:Q5152 p:P39 ?s . ?s ps:P39 ?obj . ?s pq:P580 ?x filter(contains(YEAR(?x),'1920')) }
select distinct ?obj  where {
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#subject> <http://wikidata.dbpedia.org/resource/Q5152> .
?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> <1920-5-3>
} 

What position did Mustafa Kemal Ataturk hold starting May 3, 1920?