question: Which American director of M4 wrote M0 and wrote M1 and M2
query: SELECT DISTINCT ?x0 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.09c7w0
  }