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: LET'S GET SMALL 
Clue: In area, it's the smallest constitutional monarchy in the world
monaco

Category: HOLIDAYS AND OBSERVANCES 
Clue: The name of this Jewish holy day means "beginning of the year"
rosh hashanah

Category: NO. 1 HITS 
Clue: In 1986 she topped the charts with "How Will I Know" & "The Greatest Love of All"

whitney houston