Was a film edited by M1 and executive produced by a Mexican film producer
SELECT count(*) WHERE {
?x0 a ns:film.film .
?x0 ns:film.film.edited_by M1 .
?x0 ns:film.film.executive_produced_by ?x1 .
?x1 a ns:film.producer .
?x1 ns:people.person.nationality ns:m.0b90_r
}