question: Did a American director of M1 write , executive produce , and edit a prequel of M2
query: SELECT count(*) WHERE {
  ?x0 ns:film.director.film M1 .
  ?x0 ns:film.editor.film ?x1 .
  ?x0 ns:film.producer.films_executive_produced ?x1 .
  ?x0 ns:film.writer.film ?x1 .
  ?x0 ns:people.person.nationality ns:m.09c7w0 .
  ?x1 ns:film.film.sequel M2
  }