Were M2 , M3 , and M4 directed by a Chinese screenwriter
SELECT count(*) WHERE {
?x0 a ns:film.writer .
?x0 ns:people.person.nationality ns:m.0d05w3 .
M2 ns:film.film.directed_by ?x0 .
M3 ns:film.film.directed_by ?x0 .
M4 ns:film.film.directed_by ?x0
}