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: Going off reports on Sky, Stoke played ok tonight. Think i'll stay off the messageboard tonight though -it will be grim on there :/
This tweet contains emotions: 
pessimism, sadness