question: Did M0 's Mexican writer write M1 , write M2 , and direct M4
query: SELECT count(*) WHERE {
  ?x0 ns:film.director.film M4 .
  ?x0 ns:film.writer.film M0 .
  ?x0 ns:film.writer.film M1 .
  ?x0 ns:film.writer.film M2 .
  ?x0 ns:people.person.nationality ns:m.0b90_r
  }