Was M2 edited by a Chinese cinematographer and edited by M3 and M4
SELECT count(*) WHERE {
?x0 a ns:film.cinematographer .
?x0 ns:people.person.nationality ns:m.0d05w3 .
M2 ns:film.film.edited_by ?x0 .
M2 ns:film.film.edited_by M3 .
M2 ns:film.film.edited_by M4
}