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: TheNiceBot: WSJNordics You make the world a more joyful place. #TheNiceBot #MPN #DemiLovato
This tweet contains emotions: 
joy, love, optimism