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: @WilsonsWorld I was in high school and remember helping neighbors clean up back home in Greenville.  Pretty sobering stuff.  #sadness
This tweet contains emotions: 
pessimism, sadness