question: Was M1 executive produced by M2 , edited by a film editor , and edited by M3 , M4 , and M5
query: SELECT count(*) WHERE {
  ?x0 a ns:film.editor .
  M1 ns:film.film.edited_by ?x0 .
  M1 ns:film.film.edited_by M3 .
  M1 ns:film.film.edited_by M4 .
  M1 ns:film.film.edited_by M5 .
  M1 ns:film.film.executive_produced_by M2
  }