Did a Mexican executive producer of M0 edit a film , direct M4 's prequel , and direct M2
SELECT count(*) WHERE {
?x0 ns:film.director.film ?x1 .
?x0 ns:film.director.film M2 .
?x0 ns:film.editor.film ?x2 .
?x0 ns:film.producer.films_executive_produced M0 .
?x0 ns:people.person.nationality ns:m.0b90_r .
?x1 ns:film.film.sequel M4 .
?x2 a ns:film.film
}