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: Probably the best OT period I've ever seen. Absolutely exhilarating. #WCH2016 #TeamNA
This tweet contains emotions: 
joy, optimism