machine_question: who fought in the battle of vicksburg and is the politician that held his/her government position until 1877-03-04
question: What politician held office until march of 1877 and fought in the Battle of Vicksburg?
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.politician.government_positions_held ?c .
  ?c ns:government.government_position_held.to "1877-03-04"^^xsd:dateTime . 
  }
webqsp_question: who fought in the battle of vicksburg