machine_question: what was the name of the person that said "Forgive your enemies, but never forget their names." 's brothers
question: Who is the brother of the person that said "Forgive your enemies, but never forget their names."?
sparql: PREFIX ns: <http://rdf.freebase.com/ns/>
  SELECT DISTINCT ?x
  WHERE {
  FILTER (?x != ?c)
  FILTER (!isLiteral(?x) OR lang(?x) = '' OR langMatches(lang(?x), 'en'))
  ?c ns:people.person.quotations ns:m.048kbz9 . 
  ?c ns:people.person.sibling_s ?y .
  ?y ns:people.sibling_relationship.sibling ?x .
  ?x ns:people.person.gender ns:m.05zppz .
  }
  
webqsp_question: what was the name of jfk 's brothers