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.

Category: TV TIME 
Clue: From the planet Melmac, this title TV character liked to eat cats
alf

Category: POLAND 
Clue: After WWII, over 80% of the buildings in this capital were uninhabitable
warsaw

Category: THE WEATHER FORECAST 
Clue: This type of air from above 66 degrees north latitude will send the mercury falling

arctic air