Task: Assess the emotional content of the tweet and classify it as either 'neutral or no emotion' or as one or more of the given emotions (anger, anticipation, disgust, fear, joy, love, optimism, pessimism, sadness, surprise, trust) that best represent the tweeter's mental state.
Tweet: when season 13 of greys anatomy premieres today. it you're only on season 7 #sadness :(
This tweet contains emotions: 
sadness