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.

[Q]: Category: SUBWAY STOPS 
Clue: You can ride one line in this world capital from Kifissia to Pireas
[A]: athens


[Q]: Category: MATH TERMS 
Clue: The term surd refers to irrational numbers like this number's square root, 1.7320508...
[A]: 3


[Q]: Category: LIGHTS, CAMERA, KIDS 
Clue: Kirsten Storms is seen as Zenon & her voice is heard as Bonnie, the cheerleader nemesis on this cartoon
[A]:
kim possible