question: Did M4 , M5 , M6 , and M7 employ a female British actor whose country of nationality employed M3
query: SELECT count(*) WHERE {
  ?x0 a ns:film.actor .
  ?x0 ns:people.person.gender ns:m.02zsn .
  ?x0 ns:people.person.nationality ?x1 .
  ?x0 ns:people.person.nationality ns:m.07ssc .
  ?x1 ns:business.employer.employees/ns:business.employment_tenure.person M3 .
  M4 ns:business.employer.employees/ns:business.employment_tenure.person ?x0 .
  M5 ns:business.employer.employees/ns:business.employment_tenure.person ?x0 .
  M6 ns:business.employer.employees/ns:business.employment_tenure.person ?x0 .
  M7 ns:business.employer.employees/ns:business.employment_tenure.person ?x0
  }