question: Was M1 executive produced by M2 , produced by a film producer , and written by M3 , M4 , M5 , and M6
query: SELECT count(*) WHERE {
  ?x0 a ns:film.producer .
  M1 ns:film.film.executive_produced_by M2 .
  M1 ns:film.film.produced_by|ns:film.film.production_companies ?x0 .
  M1 ns:film.film.written_by M3 .
  M1 ns:film.film.written_by M4 .
  M1 ns:film.film.written_by M5 .
  M1 ns:film.film.written_by M6
  }