question: Was a actor that M1 was produced by a film distributor 's employee
query: SELECT count(*) WHERE {
  ?x0 a ns:film.actor .
  ?x0 ns:film.producer.film|ns:film.production_company.films M1 .
  ?x0 ns:people.person.employment_history/ns:business.employment_tenure.company ?x1 .
  ?x1 a ns:film.film_distributor
  }