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.
--------
Question: Category: SINGERS 
Clue: This singer played detective Foxxy Cleopatra in the third "Austin Powers" movie

Answer: beyoncé knowles


Question: Category: PEN NAMES 
Clue: He contributed to the Columbia Review under the name Jean-Louis Incogniteau, perhaps while he was "On the Road"

Answer: jack kerouac


Question: Category: TOUGH GEOGRAPHY 
Clue: Asia's longest river, it rises in China's Kunlun Mountains & empties into the East China Sea near Shanghai

Answer:
the yangtze river