Task: Classify the mental state of the tweeter based on the tweet, determining if it is 'neutral or no emotion' or characterized by any of the provided emotions (anger, anticipation, disgust, fear, joy, love, optimism, pessimism, sadness, surprise, trust).
Tweet: Why are people that don't have iPhones so bitter about iPhones???? Can someone explain
This tweet contains emotions: 
anger, anticipation, disgust, fear, pessimism, sadness