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: Sister: (Canadian player does something shady.) Jonathan Toews is frowning and he doesn't know why. #WorldCupOfHockey
This tweet contains emotions: 
anger, disgust, sadness