Was M2 's Mexican Spanish star M3 's star
SELECT count(*) WHERE {
?x0 ns:film.actor.film/ns:film.performance.film M2 .
?x0 ns:film.actor.film/ns:film.performance.film M3 .
?x0 ns:people.person.nationality ns:m.06mkj .
?x0 ns:people.person.nationality ns:m.0b90_r
}