question: What was written by M0 and M1 , executive produced by a person , and directed by M3 's director
query: SELECT DISTINCT ?x0 WHERE {
  ?x0 ns:film.film.directed_by ?x1 .
  ?x0 ns:film.film.executive_produced_by ?x2 .
  ?x0 ns:film.film.written_by M0 .
  ?x0 ns:film.film.written_by M1 .
  ?x1 ns:film.director.film M3 .
  ?x2 a ns:people.person
  }