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: When you saw a t-shirt with the phrase 'My mind is a dangerous place to be' and you would like to buy, but in Italy don't sell it. #sadness
This tweet contains emotions: 
sadness