Given a factoid/trivia type question, generate the topic of the question. The topic is the entity the question talks about.
--------
Question: In music, which band consists of Billy Gibbons, Dusty Hill and Frank Beard?

Answer: frank beard

Question: Which is the only Avril Lavigne song to have reached No.1 in the US Billboard Chart?

Answer: avril lavigne

Question: Who played Saffron Monsoon in the UK television comedy series 'Absolutely Fabulous'?

Answer:
absolutely fabulous