Task: Classify the mental state of the tweeter based on the tweet, determining if it is 'neutral or no emotion' or characterized by any of the provided emotions (anger, anticipation, disgust, fear, joy, love, optimism, pessimism, sadness, surprise, trust).
Tweet: Maybe the entire Russian team will test positive for meldonium and the North Americans will get to replace them #optimism
This tweet contains emotions: 
optimism