question: Were M1 , M3 , and M4 edited by a person , executive produced by M2 , and directed by a person
query: SELECT count(*) WHERE {
  ?x0 a ns:people.person .
  ?x1 a ns:people.person .
  M1 ns:film.film.directed_by ?x1 .
  M1 ns:film.film.edited_by ?x0 .
  M1 ns:film.film.executive_produced_by M2 .
  M3 ns:film.film.directed_by ?x1 .
  M3 ns:film.film.edited_by ?x0 .
  M3 ns:film.film.executive_produced_by M2 .
  M4 ns:film.film.directed_by ?x1 .
  M4 ns:film.film.edited_by ?x0 .
  M4 ns:film.film.executive_produced_by M2
  }