Did a Mexican costume designer write M1 and produce a film
SELECT count(*) WHERE {
?x0 a ns:film.film_costumer_designer .
?x0 ns:film.producer.film|ns:film.production_company.films ?x1 .
?x0 ns:film.writer.film M1 .
?x0 ns:people.person.nationality ns:m.0b90_r .
?x1 a ns:film.film
}