Task: Categorize the tweet's emotional tone as either 'neutral or no emotion' or identify the presence of one or more of the given 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