question: What film directed by , produced by , and written by M3 , M4 , M5 , and M6 starred M1 and M2
query: SELECT DISTINCT ?x0 WHERE {
  ?x0 a ns:film.film .
  ?x0 ns:film.film.directed_by M3 .
  ?x0 ns:film.film.directed_by M4 .
  ?x0 ns:film.film.directed_by M5 .
  ?x0 ns:film.film.directed_by M6 .
  ?x0 ns:film.film.produced_by|ns:film.film.production_companies M3 .
  ?x0 ns:film.film.produced_by|ns:film.film.production_companies M4 .
  ?x0 ns:film.film.produced_by|ns:film.film.production_companies M5 .
  ?x0 ns:film.film.produced_by|ns:film.film.production_companies M6 .
  ?x0 ns:film.film.starring/ns:film.performance.actor M1 .
  ?x0 ns:film.film.starring/ns:film.performance.actor M2 .
  ?x0 ns:film.film.written_by M3 .
  ?x0 ns:film.film.written_by M4 .
  ?x0 ns:film.film.written_by M5 .
  ?x0 ns:film.film.written_by M6
  }