machine_question: who fought in the battle of vicksburg and ended governmental position after 1877-03-11
question: Who fought in the Battle of Vicksburg and ended the government position after 3-11-1877?
sparql: PREFIX ns: <http://rdf.freebase.com/ns/>
  SELECT DISTINCT ?x
  WHERE {
  FILTER (?x != ns:m.01hf7f)
  FILTER (!isLiteral(?x) OR lang(?x) = '' OR langMatches(lang(?x), 'en'))
  ns:m.01hf7f ns:base.culturalevent.event.entity_involved ?x .
  ?x ns:government.political_appointer.appointees ?c .
  ?c ns:government.government_position_held.to ?num .
  FILTER (?num > "1877-03-11"^^xsd:dateTime) . 
  }
webqsp_question: who fought in the battle of vicksburg