question: Did a film producer employ a male producer of M1
query: SELECT count(*) WHERE {
  ?x0 a ns:film.producer .
  ?x0 ns:business.employer.employees/ns:business.employment_tenure.person ?x1 .
  ?x1 ns:film.producer.film|ns:film.production_company.films M1 .
  ?x1 ns:people.person.gender ns:m.05zppz
  }