Was a screenwriter that M2 was edited by and was written by a Mexican actor
SELECT count(*) WHERE {
?x0 a ns:film.actor .
?x0 a ns:film.writer .
?x0 ns:film.editor.film M2 .
?x0 ns:film.writer.film M2 .
?x0 ns:people.person.nationality ns:m.0b90_r
}