machine_question: what is the artist had a concert tour named The Mrs. Carter Show World Tour 's daughters name
question: What is the name of the daughter of the artist who had the "The Mrs. Carter Show World Tour"?
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:music.artist.concert_tours ns:m.0qftnyr . 
  ?c ns:people.person.children ?x .
  }
  
webqsp_question: what is beyonce 's daughters name