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: Melissa Benoist and Grant Gustin HAVE to do a musical crossover episode! #glee origins #arrowverse
This tweet contains emotions: 
anticipation, joy, optimism