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: Texans and Astros both shut out tonight. Houston, we're back to normal. #texans #Astros #sadness #losers
This tweet contains emotions: 
sadness