Were M2 , M3 , M4 , and M5 produced by a Chinese producer of a prequel of M1
SELECT count(*) WHERE {
?x0 ns:film.producer.film|ns:film.production_company.films ?x1 .
?x0 ns:people.person.nationality ns:m.0d05w3 .
?x1 ns:film.film.sequel M1 .
M2 ns:film.film.produced_by|ns:film.film.production_companies ?x0 .
M3 ns:film.film.produced_by|ns:film.film.production_companies ?x0 .
M4 ns:film.film.produced_by|ns:film.film.production_companies ?x0 .
M5 ns:film.film.produced_by|ns:film.film.production_companies ?x0
}