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