Task: Determine the dominant emotion in the tweet and classify it as either 'neutral or no emotion' or one of the eleven provided emotions (anger, anticipation, disgust, fear, joy, love, optimism, pessimism, sadness, surprise, trust).
Tweet: A #smile can mean a thousand words, but it can also hide a thousand #problems. #Fact #TeamFollowBack
This tweet contains emotions: 
joy, optimism, sadness