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: AMERICAN POETRY 
Clue: In "Stopping by Woods on a Snowy Evening", he wrote that he had "promises to keep, and miles to go before I sleep"

A: frost
****
Q: Category: SIMILES 
Clue: The expression this "as a judge" dates back to around 1700

A: sober
****
Q: Category: ARTISTS 
Clue: In a 1909 still life he included a section of his earlier painting "La Danse"

A:
matisse
****