Context: Federalism is one of the entrenched constitutional principles of Germany. According to the German constitution (called Grundgesetz or in English Basic Law), some topics, such as foreign affairs and defense, are the exclusive responsibility of the federation (i.e., the federal level), while others fall under the shared authority of the states and the federation; the states retain residual legislative authority for all other areas, including "culture", which in Germany includes not only topics such as financial promotion of arts and sciences, but also most forms of education and job training. Though international relations including international treaties are primarily the responsibility of the federal level, the constituent states have certain limited powers in this area: in matters that affect them directly, the states defend their interests at the federal level through the Bundesrat (literally Federal Council, the upper house of the German Federal Parliament) and in areas where they have legislative authority they have limited powers to conclude international treaties "with the consent of the federal government".

Question: What is an entrenched constitutional principle in Germany?
Answer: Federalism

Question: In Germany, foreign affairs is under the exclusive purvey of what? 
Answer: the federation

Question: What is an example of what states retain authority over?
Answer: culture

Question: The states defend their interests at the federal level through what?
Answer: the Bundesrat

Question: Whose consent do the states need to make international treaties?
Answer: the federal government

Question: What is one of the entrenched legislative authorities of Bundesrat?
Answer: Unanswerable

Question: What is another word for foreign affairs?
Answer: Unanswerable

Question: What do the states have exclusive responsibility of?
Answer: Unanswerable

Question: What does German culture use to defend its interests at the federal level?
Answer: Unanswerable

Question: What areas do international relations also include?
Answer: Unanswerable

Question: Which political system is not used in Germany?
Answer: Unanswerable

Question: What is a topic that is the exclusive responsibility of the state?
Answer: Unanswerable

Question: What is the federal system is defended through?
Answer: Unanswerable

Question: What sole power do the states hold that require no consent of the federal government?
Answer: Unanswerable

Question: What do the states hold the exclusive power to negotiate? 
Answer: Unanswerable