What German actor of a character wrote M0 and M1
SELECT DISTINCT ?x0 WHERE {
?x0 ns:film.actor.film/ns:film.performance.character ?x1 .
?x0 ns:film.writer.film M0 .
?x0 ns:film.writer.film M1 .
?x0 ns:people.person.nationality ns:m.0345h .
?x1 a ns:fictional_universe.fictional_character
}