Task: Classify the mental state of the tweeter based on the tweet, determining if it is 'neutral or no emotion' or characterized by any of the provided emotions (anger, anticipation, disgust, fear, joy, love, optimism, pessimism, sadness, surprise, trust).
Tweet: It was a bright cold day in April, and the clocks were striking thirteen. ~ George Orwell, 1984
This tweet contains emotions: 
joy