Task: Identify the primary emotion conveyed in the tweet and assign it to either 'neutral or no emotion' or one or more of the provided emotions (anger, anticipation, disgust, fear, joy, love, optimism, pessimism, sadness, surprise, trust) that best capture the tweeter's mental state.
Tweet: @alicemazzy he was more partisan on social issues a few years back; now he just concern trolls the center left as Chait does the far left
This tweet contains emotions: 
anticipation