question: What did M0 and M1 write , M2 write , M3 direct , and a film 's writer direct
query: SELECT DISTINCT ?x0 WHERE {
  ?x0 ns:film.film.directed_by ?x1 .
  ?x0 ns:film.film.directed_by M3 .
  ?x0 ns:film.film.written_by M0 .
  ?x0 ns:film.film.written_by M1 .
  ?x0 ns:film.film.written_by M2 .
  ?x1 ns:film.writer.film ?x2 .
  ?x2 a ns:film.film
  }