Was a film editor 's employer founded by M1 's producer and founded by a costume designer
SELECT count(*) WHERE {
?x0 ns:business.employer.employees/ns:business.employment_tenure.person ?x1 .
?x0 ns:organization.organization.founders ?x2 .
?x0 ns:organization.organization.founders ?x3 .
?x1 a ns:film.editor .
?x2 a ns:film.film_costumer_designer .
?x3 ns:film.producer.film|ns:film.production_company.films M1
}