question: Which film was executive produced by M1 , directed by M4 , written by M2 , and edited by M3
query: SELECT DISTINCT ?x0 WHERE {
  ?x0 a ns:film.film .
  ?x0 ns:film.film.directed_by M4 .
  ?x0 ns:film.film.edited_by M3 .
  ?x0 ns:film.film.executive_produced_by M1 .
  ?x0 ns:film.film.written_by M2
  }