Task: Determine the dominant emotion in the tweet and classify it as either 'neutral or no emotion' or one of the eleven provided emotions (anger, anticipation, disgust, fear, joy, love, optimism, pessimism, sadness, surprise, trust).
Tweet: oh, btw - after a 6 month depression-free time I got a relapse now... superb #depression
This tweet contains emotions: 
pessimism, sadness