instruction:
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: FICTIONAL BATTLES & WARS 
Clue: Juan Rico joins the mobile infantry to fight in the war against the invading alien "bugs" in this Heinlein novel
answer:
starship troopers


question:
Category: BALLET 
Clue: "Filling Station" features dancing truck drivers & this 1930s dance whose name is New York City's nickname
answer:
the big apple


question:
Category: OSCAR WORTHY? 
Clue: Diedrich Bader voiced Oscar, a saber-tooth in this 2002 animated film
answer:

ice age