question: Did a art director of a film whose prequel was edited by M3 and M4 and starred M2 executive produce M0
query: SELECT count(*) WHERE {
  ?x0 ns:film.film_art_director.films_art_directed ?x1 .
  ?x0 ns:film.producer.films_executive_produced M0 .
  ?x1 a ns:film.film .
  ?x1 ns:film.film.prequel ?x2 .
  ?x2 ns:film.film.edited_by M3 .
  ?x2 ns:film.film.edited_by M4 .
  ?x2 ns:film.film.starring/ns:film.performance.actor M2
  }