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: @XboxMAD @RobotBrush Ballmer will be furious. Another delivery lost...
This tweet contains emotions: 
anger, disgust, sadness