question: Was M1 a film whose prequel was edited by and starred M0
query: SELECT count(*) WHERE {
  ?x0 ns:film.film.edited_by M0 .
  ?x0 ns:film.film.starring/ns:film.performance.actor M0 .
  M1 a ns:film.film .
  M1 ns:film.film.prequel ?x0
  }