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: Extremely bitter about the fact that the Subway in Robart's has been replaced with a low-rent version of Chipotle
This tweet contains emotions: 
anger, disgust, sadness