question: Did M1 , M2 , M3 , M4 , and M5 employ a film director
query: SELECT count(*) WHERE {
  ?x0 a ns:film.director .
  M1 ns:business.employer.employees/ns:business.employment_tenure.person ?x0 .
  M2 ns:business.employer.employees/ns:business.employment_tenure.person ?x0 .
  M3 ns:business.employer.employees/ns:business.employment_tenure.person ?x0 .
  M4 ns:business.employer.employees/ns:business.employment_tenure.person ?x0 .
  M5 ns:business.employer.employees/ns:business.employment_tenure.person ?x0
  }