machine_question: who is the subject of the film The Greatest Story Never Told: Michael BublÃ©
question: Who is the subject of the flim The Greatest Story Never Told: Michael BublÃ©?
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:film.film_subject.films ns:m.012vsn3t . 
  ?c ns:people.person.profession ?x .
  }
  
webqsp_question: who is michael buble