question: Did M1 , M2 , M3 , and M4 write , edit , and direct M0 's prequel
query: SELECT count(*) WHERE {
  ?x0 ns:film.film.sequel M0 .
  M1 ns:film.director.film ?x0 .
  M1 ns:film.editor.film ?x0 .
  M1 ns:film.writer.film ?x0 .
  M2 ns:film.director.film ?x0 .
  M2 ns:film.editor.film ?x0 .
  M2 ns:film.writer.film ?x0 .
  M3 ns:film.director.film ?x0 .
  M3 ns:film.editor.film ?x0 .
  M3 ns:film.writer.film ?x0 .
  M4 ns:film.director.film ?x0 .
  M4 ns:film.editor.film ?x0 .
  M4 ns:film.writer.film ?x0
  }