machine_question: who was the president of the united states during ww2 and is the politician started governmental position after 1939-01-02
question: Who was the president of the United States during World War 2 that started his governmental position after January 2, 1939?
sparql: #MANUAL SPARQL
  PREFIX ns: <http://rdf.freebase.com/ns/>
  SELECT DISTINCT ?x
  WHERE {
    ns:m.081pw ns:time.event.start_date ?start ;
               ns:time.event.end_date ?end .
    ?x ns:government.politician.government_positions_held  ?y .
    ?y ns:government.government_position_held.office_position_or_title ns:m.060d2 ; # President of the United States
       ns:government.government_position_held.from  ?from ;
       ns:government.government_position_held.to  ?to .
    FILTER (?from < ?end)
    FILTER (?to > ?start)?x ns:government.political_appointer.appointees ?c .
  ?c ns:government.government_position_held.from ?num .
  FILTER (?num > "1939-01-02"^^xsd:dateTime) . 
  }
webqsp_question: who was the president of the united states during ww2