Task: Analyze the tweet's sentiment and assign it to either 'neutral or no emotion' or one or more of the specified emotions (anger, anticipation, disgust, fear, joy, love, optimism, pessimism, sadness, surprise, trust).
Tweet: When you're prof suggest @Pharrell and William James may be unlikely dialogue partners and then plays the #happy video #WeAreCST
This tweet contains emotions: 
joy, optimism