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

Example Input: Better known as an actor, who directed the film `A Bronx Tale`?
Example Output: a bronx tale

Example Input: On January 26, 1879, who was granted a patent for r an electric lamp using a carbon filament or strip coiled and connected to platina contact wires?
Example Output: incandescent light bulb

Example Input: Who created several children's shows for TV, including Bagpuss, Ivor the Engine and Noggin the Nog?
Example Output:
bagpuss