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

Q: In 1864, the Dale Dyke Dam burst while being filled, leading to the death of 240 people in which British city?

A: dale dike reservoir
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Q: What name was given to the 1950-60s mainstream country music style of artists including Patsy Cline, Tammy Wynette, Jim Reeves, and Charlie Rich?

A: charlie rich
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Q: April 25, 1939 saw DC comics introduce what major super hero, their second major, who debuted in issue 27 of Detective Comics.?

A:
dc comics
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