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: A3: But chronic sadness may mean there are underlying issues than getting sad occassionally over a particular issue (2/2) #mhchat
This tweet contains emotions: 
disgust, fear, pessimism, sadness