Task: Categorize the tweet's emotional tone as either 'neutral or no emotion' or identify the presence of one or more of the given emotions (anger, anticipation, disgust, fear, joy, love, optimism, pessimism, sadness, surprise, trust).
Tweet: when season 13 of greys anatomy premieres today. it you're only on season 7 #sadness :(
This tweet contains emotions: 
sadness