Was M2 executive produced by M3 and M4 , produced by M5 and M6 , and written by a Mexican film editor
SELECT count(*) WHERE {
?x0 a ns:film.editor .
?x0 ns:people.person.nationality ns:m.0b90_r .
M2 ns:film.film.executive_produced_by M3 .
M2 ns:film.film.executive_produced_by M4 .
M2 ns:film.film.produced_by|ns:film.film.production_companies M5 .
M2 ns:film.film.produced_by|ns:film.film.production_companies M6 .
M2 ns:film.film.written_by ?x0
}