machine_question: where was the artist had a concert tour named The Avril Lavigne Tour born
question: What is the birthplace of the artist that went on The Avril Lavinge 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.0z2ntbg . 
  ?c ns:people.person.place_of_birth ?x .
  }
  
webqsp_question: where was avril lavigne born