Was M2 's actor a Mexican star and editor of M1
SELECT count(*) WHERE {
?x0 ns:film.actor.film/ns:film.performance.character M2 .
?x0 ns:film.actor.film/ns:film.performance.film M1 .
?x0 ns:film.editor.film M1 .
?x0 ns:people.person.nationality ns:m.0b90_r
}