question: Was a sequel of M1 directed by M2 , M3 , M4 , and M5 , directed by M6 , and edited by M0
query: SELECT count(*) WHERE {
  ?x0 ns:film.film.directed_by M2 .
  ?x0 ns:film.film.directed_by M3 .
  ?x0 ns:film.film.directed_by M4 .
  ?x0 ns:film.film.directed_by M5 .
  ?x0 ns:film.film.directed_by M6 .
  ?x0 ns:film.film.edited_by M0 .
  ?x0 ns:film.film.prequel M1
  }