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 simplicity, answers should be in all lower cased letters.
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Question: Category: RED, WHITE OR BLUE 
Clue: Jack London's follow-up doggie tale to "The Call of the Wild"

Answer: white fang


Question: Category: ON THE GO 
Clue: John Ericsson, who built a steam locomotive in England in 1829, built this famous Civil War steam-powered ship

Answer: the monitor


Question: Category: PLENTY OF TIME 
Clue: A clock set in the year 2000 & losing 1 second a year would first be an hour off in this year

Answer:
5600