question: Was M1 executive produced by M2 and M3 , executive produced by a film editor , and edited by M4 , M5 , and M6
query: SELECT count(*) WHERE {
  ?x0 a ns:film.editor .
  M1 ns:film.film.edited_by M4 .
  M1 ns:film.film.edited_by M5 .
  M1 ns:film.film.edited_by M6 .
  M1 ns:film.film.executive_produced_by ?x0 .
  M1 ns:film.film.executive_produced_by M2 .
  M1 ns:film.film.executive_produced_by M3
  }