Teacher: Given a factoid/trivia type question, generate the topic of the question. The topic is the entity the question talks about.
Teacher: Now, understand the problem? If you are still confused, see the following example:
Who was the first American President?
Solution: president of the united states
Reason: The question talks about the president of the USA.

Now, solve this instance: Which American President once famously proclaimed `Ich bin ein Berliner`?
Student:

Show your work and conclude with the exact phrasing "Therefore, the final answer is [answer]." where [answer] is just the final number or expression that solves the problem.
user
ich bin ein berliner