Was M2 a Mexican art director whose parent wrote M0 and M1
SELECT count(*) WHERE {
?x0 ns:film.writer.film M0 .
?x0 ns:film.writer.film M1 .
M2 a ns:film.film_art_director .
M2 ns:people.person.nationality ns:m.0b90_r .
M2 ns:people.person.parents|ns:fictional_universe.fictional_character.parents|ns:organization.organization.parent/ns:organization.organization_relationship.parent ?x0
}