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.
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Question: Category: LAND "HA"! 
Clue: Ho Chi Minh's remains are on display in a mausoleum in Ba Dinh Square in this Vietnamese city

Answer: hanoi


Question: Category: HEAVYWEIGHT CHAMPS 
Clue: This former heavyweight champ failed to regain his title against Gene Tunney in 1927's "Battle of the Long Count"

Answer: jack dempsey


Question: Category: THE ESCAPED DENTAL PATIENT 
Clue: I heard them whispering about this 3-session treatment for diseased pulp--no thank you

Answer:
a root canal