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: @Author_LB Awesome. My 9 yr old grandson runs cross country. No Simon Whitfield but still a lot of fun cheering him on.
This tweet contains emotions: 
joy, optimism