Was a costume designer that M2 , M3 , M4 , and M5 employed M0
SELECT count(*) WHERE {
M0 a ns:film.film_costumer_designer .
M0 ns:people.person.employment_history/ns:business.employment_tenure.company M2 .
M0 ns:people.person.employment_history/ns:business.employment_tenure.company M3 .
M0 ns:people.person.employment_history/ns:business.employment_tenure.company M4 .
M0 ns:people.person.employment_history/ns:business.employment_tenure.company M5
}