question: Did M1 star M2 and M3 and star a film 's editor and producer
query: SELECT count(*) WHERE {
  ?x0 ns:film.editor.film ?x1 .
  ?x0 ns:film.producer.film|ns:film.production_company.films ?x1 .
  ?x1 a ns:film.film .
  M1 ns:film.film.starring/ns:film.performance.actor ?x0 .
  M1 ns:film.film.starring/ns:film.performance.actor M2 .
  M1 ns:film.film.starring/ns:film.performance.actor M3
  }