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: JOSE CAN YOU SEE 
Clue: The largest of the 4 modern countries Jose de San Martin helped liberate from European rule
[A]: argentina


[Q]: Category: SUPERHEROES 
Clue: For a while the Hulk was gray, but now he's this color
[A]: green


[Q]: Category: DOUBLE TALK 
Clue: In the 1920s Donald Duncan introduced this child's toy to America & it's had its ups & downs ever since
[A]:
yo-yo