Was a costume designer whose employer was founded by M0 , was founded by M1 , and employed M2 and M3 M4
SELECT count(*) WHERE {
?x0 ns:business.employer.employees/ns:business.employment_tenure.person M2 .
?x0 ns:business.employer.employees/ns:business.employment_tenure.person M3 .
?x0 ns:organization.organization.founders M0 .
?x0 ns:organization.organization.founders M1 .
M4 a ns:film.film_costumer_designer .
M4 ns:people.person.employment_history/ns:business.employment_tenure.company ?x0
}