Was a production company 's female British employee 's employer M3
SELECT count(*) WHERE {
?x0 ns:people.person.employment_history/ns:business.employment_tenure.company ?x1 .
?x0 ns:people.person.gender ns:m.02zsn .
?x0 ns:people.person.nationality ns:m.07ssc .
?x1 a ns:film.production_company .
M3 ns:business.employer.employees/ns:business.employment_tenure.person ?x0
}