question: Was M5 a production company whose employee directed M0 , M1 , M2 , M3 , and M4
query: SELECT count(*) WHERE {
  ?x0 ns:film.director.film M0 .
  ?x0 ns:film.director.film M1 .
  ?x0 ns:film.director.film M2 .
  ?x0 ns:film.director.film M3 .
  ?x0 ns:film.director.film M4 .
  M5 a ns:film.production_company .
  M5 ns:business.employer.employees/ns:business.employment_tenure.person ?x0
  }