Were M4 and M6 written by a Chinese person that M2 and M3 starred and produced by M5
SELECT count(*) WHERE {
?x0 a ns:people.person .
?x0 ns:film.actor.film/ns:film.performance.film M2 .
?x0 ns:film.actor.film/ns:film.performance.film M3 .
?x0 ns:people.person.nationality ns:m.0d05w3 .
M4 ns:film.film.produced_by|ns:film.film.production_companies M5 .
M4 ns:film.film.written_by ?x0 .
M6 ns:film.film.produced_by|ns:film.film.production_companies M5 .
M6 ns:film.film.written_by ?x0
}