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: The underground at Waterloo is not a nice place to be at 8.30am on a Thursday #somanypeople #grim
This tweet contains emotions: 
anger, disgust, fear, pessimism, sadness