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

Input: Consider Input: Which Chuck Berry song is performed by Marty McFly at the end of the film Back to the Future?

Output: back to the future


Input: Consider Input: Which British TV star and disc jockey said `It`s not affected my work - how healthy do you have to be to play Da Do Ron Ron` in 1992 after confirming he had AIDS?

Output: hiv/aids


Input: Consider Input: Which English town is known for its collection of concrete cows?


Output: concrete cows