Did a German film editor play M2 and M3
SELECT count(*) WHERE {
?x0 a ns:film.editor .
?x0 ns:film.actor.film/ns:film.performance.character M2 .
?x0 ns:film.actor.film/ns:film.performance.character M3 .
?x0 ns:people.person.nationality ns:m.0345h
}