Was a person a costume designer that M2 and M3 were played by
SELECT count(*) WHERE {
?x0 a ns:film.film_costumer_designer .
?x0 a ns:people.person .
?x0 ns:film.actor.film/ns:film.performance.character M2 .
?x0 ns:film.actor.film/ns:film.performance.character M3
}