Task: Analyze the tweet's emotional connotations and classify it as either 'neutral or no emotion' or as one or more of the specified emotions (anger, anticipation, disgust, fear, joy, love, optimism, pessimism, sadness, surprise, trust) that best portray 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