question: Which film producer that M1 was written by , was executive produced by , was directed by , and starred wrote M2
query: SELECT DISTINCT ?x0 WHERE {
  ?x0 a ns:film.producer .
  ?x0 ns:film.actor.film/ns:film.performance.film M1 .
  ?x0 ns:film.director.film M1 .
  ?x0 ns:film.producer.films_executive_produced M1 .
  ?x0 ns:film.writer.film M1 .
  ?x0 ns:film.writer.film M2
  }