Who was a German executive producer of M1 , M2 , M3 , M4 , M5 , and M6
SELECT DISTINCT ?x0 WHERE {
?x0 a ns:people.person .
?x0 ns:film.producer.films_executive_produced M1 .
?x0 ns:film.producer.films_executive_produced M2 .
?x0 ns:film.producer.films_executive_produced M3 .
?x0 ns:film.producer.films_executive_produced M4 .
?x0 ns:film.producer.films_executive_produced M5 .
?x0 ns:film.producer.films_executive_produced M6 .
?x0 ns:people.person.nationality ns:m.0345h
}