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: Imagine celtic burst the net wae every attempt, but nutt same old dain it hard way usual
This tweet contains emotions: 
sadness