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