You will be given a trivia clue, and the category it belongs to. You should answer with the best answer that belongs in the category and is described by the clue. For consistency, answers should be in all lower cased letters.

[EX Q]: Category: MAN "D"
Clue: As a runaway slave, Frederick Augustus Washington Bailey changed his name to this to avoid capture
[EX A]: douglass

[EX Q]: Category: STATE CAPITALS
Clue: It's nicknamed the "Green Mountain City"
[EX A]: montpelier

[EX Q]: Category: HEAT
Clue: This form of energy, defined as the Earth's natural heat, warms buildings in Klamath Falls, Boise & Reykjavik
[EX A]:
geothermal energy