Given a factoid/trivia type question, generate the topic of the question. The topic is the entity the question talks about.

Input: Consider Input: Will you still be sending me a valentine is a line from which Beatles song?

Output: the beatles


Input: Consider Input: Which major river has its source at the confluence of the rivers Brigach and Breg in the Black Forest?

Output: breg


Input: Consider Input: Which country's territory includes a long narrow east-west tongue separating Zambia from Botswana?


Output: zambia