question: Was a film produced by a Canadian film editor , written by M1 , and produced by a film producer 's employee
query: SELECT count(*) WHERE {
  ?x0 a ns:film.film .
  ?x0 ns:film.film.produced_by|ns:film.film.production_companies ?x1 .
  ?x0 ns:film.film.produced_by|ns:film.film.production_companies ?x2 .
  ?x0 ns:film.film.written_by M1 .
  ?x1 a ns:film.editor .
  ?x1 ns:people.person.nationality ns:m.0d060g .
  ?x2 ns:people.person.employment_history/ns:business.employment_tenure.company ?x3 .
  ?x3 a ns:film.producer
  }