question: Did M2 star M3 , M4 , and M5 , star a person 's German actor , and star M6
query: SELECT count(*) WHERE {
  ?x0 ns:film.actor.film/ns:film.performance.character ?x1 .
  ?x0 ns:people.person.nationality ns:m.0345h .
  ?x1 a ns:people.person .
  M2 ns:film.film.starring/ns:film.performance.actor ?x0 .
  M2 ns:film.film.starring/ns:film.performance.actor M3 .
  M2 ns:film.film.starring/ns:film.performance.actor M4 .
  M2 ns:film.film.starring/ns:film.performance.actor M5 .
  M2 ns:film.film.starring/ns:film.performance.actor M6
  }