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

Input: Consider Input: What is the title of the four-episode special of 'Doctor Who', made for the Red Nose Day telethon in the UK, broadcast in March 1999?

Output: doctor who


Input: Consider Input: Whose tale in Chaucer's The Canterbury Tales tells of a knight sent away by his queen to discover what women want above all else?

Output: the canterbury tales


Input: Consider Input: Which operatic heroine is the daughter of Amonasro, King of Ethiopia?


Output: amonasro