question: Were M1 , M5 , and M6 directed by M3 and M4 , edited by M2 , and edited by a person
query: SELECT count(*) WHERE {
  ?x0 a ns:people.person .
  M1 ns:film.film.directed_by M3 .
  M1 ns:film.film.directed_by M4 .
  M1 ns:film.film.edited_by ?x0 .
  M1 ns:film.film.edited_by M2 .
  M5 ns:film.film.directed_by M3 .
  M5 ns:film.film.directed_by M4 .
  M5 ns:film.film.edited_by ?x0 .
  M5 ns:film.film.edited_by M2 .
  M6 ns:film.film.directed_by M3 .
  M6 ns:film.film.directed_by M4 .
  M6 ns:film.film.edited_by ?x0 .
  M6 ns:film.film.edited_by M2
  }