Did M2 employ M3 , employ M1 's costume designer , employ a costume designer , and employ M4
SELECT count(*) WHERE {
?x0 a ns:film.film_costumer_designer .
?x1 ns:film.film_costumer_designer.costume_design_for_film M1 .
M2 ns:business.employer.employees/ns:business.employment_tenure.person ?x0 .
M2 ns:business.employer.employees/ns:business.employment_tenure.person ?x1 .
M2 ns:business.employer.employees/ns:business.employment_tenure.person M3 .
M2 ns:business.employer.employees/ns:business.employment_tenure.person M4
}