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: At 12:01, Tumblr became sentient. At 1.:02, Tumblr posted gn animated gif about it. At 12:03, Tumblr shipped itself.
This tweet contains emotions: 
joy