Given a factoid/trivia type question, generate the topic of the question. The topic is the entity the question talks about.
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Question: Who played the title role in the 1955 film 'Davy Crockett, King Of The Wild Frontier'?

Answer: davy crockett

Question: Food writer and critic Egon Ronay, who died in 2010, was born in what country, which offers a food related pun?

Answer: egon ronay

Question: 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?

Answer:
incandescent light bulb