question: Did M2 edit and write a film executive produced by and directed by M1
query: SELECT count(*) WHERE {
  ?x0 a ns:film.film .
  ?x0 ns:film.film.directed_by M1 .
  ?x0 ns:film.film.executive_produced_by M1 .
  M2 ns:film.editor.film ?x0 .
  M2 ns:film.writer.film ?x0
  }