question: Was a film edited by , executive produced by , and written by a actor of M1 , M2 , and M3
query: SELECT count(*) WHERE {
  ?x0 a ns:film.film .
  ?x0 ns:film.film.edited_by ?x1 .
  ?x0 ns:film.film.executive_produced_by ?x1 .
  ?x0 ns:film.film.written_by ?x1 .
  ?x1 ns:film.actor.film/ns:film.performance.character M1 .
  ?x1 ns:film.actor.film/ns:film.performance.character M2 .
  ?x1 ns:film.actor.film/ns:film.performance.character M3
  }