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 consistency, answers should be in all lower cased letters.

Category: STATE CAPITALS 
Clue: It's nicknamed the "Green Mountain City"
montpelier

Category: NEW MEXICO 
Clue: In 1942 this comparatively isolated New Mexico place was chosen for an atomic research lab
los alamos

Category: HOLIDAYS & OBSERVANCES 
Clue: In 1723, 120 years before Christmas cards, decorated writing paper was sold for lovers to use on this holiday

valentine\'s day