Did a Chinese actor edit a film and edit M1
SELECT count(*) WHERE {
?x0 a ns:film.actor .
?x0 ns:film.editor.film ?x1 .
?x0 ns:film.editor.film M1 .
?x0 ns:people.person.nationality ns:m.0d05w3 .
?x1 a ns:film.film
}