Did M3 employ M4 and employ a costume designer that executive produced M1 and M2
SELECT count(*) WHERE {
?x0 a ns:film.film_costumer_designer .
?x0 ns:film.producer.films_executive_produced M1 .
?x0 ns:film.producer.films_executive_produced M2 .
M3 ns:business.employer.employees/ns:business.employment_tenure.person ?x0 .
M3 ns:business.employer.employees/ns:business.employment_tenure.person M4
}