question: Were M2 and M5 executive produced by M3 , written by M4 , and produced by a Canadian actor
query: SELECT count(*) WHERE {
  ?x0 a ns:film.actor .
  ?x0 ns:people.person.nationality ns:m.0d060g .
  M2 ns:film.film.executive_produced_by M3 .
  M2 ns:film.film.produced_by|ns:film.film.production_companies ?x0 .
  M2 ns:film.film.written_by M4 .
  M5 ns:film.film.executive_produced_by M3 .
  M5 ns:film.film.produced_by|ns:film.film.production_companies ?x0 .
  M5 ns:film.film.written_by M4
  }