Task: Assess the emotional content of the tweet and classify it as either 'neutral or no emotion' or as one or more of the given emotions (anger, anticipation, disgust, fear, joy, love, optimism, pessimism, sadness, surprise, trust) that best represent the tweeter's mental state.
Tweet: A cheerful sloth annotated old books about a very good man then the gods ended evil.
This tweet contains emotions: 
joy, optimism