Given a factoid/trivia type question, generate the topic of the question. The topic is the entity the question talks about.
--------
Question: Who follows 'the eight fold path'?

Answer: noble eightfold path

Question: In which opera does a hunchback jester help his master, the Duke of Mantua, to seduce the daughter of a courtier?

Answer: duke of mantua

Question: Which 'Doctor' has been played on television by Bill Simpson and David Rintoul?

Answer:
david rintoul