Task: Assess the emotional content of the tweet and classify it as either 'neutral or no emotion' or as one or more of the given emotions (anger, anticipation, disgust, fear, joy, love, optimism, pessimism, sadness, surprise, trust) that best represent the tweeter's mental state.
Tweet: @mdthib This is so lovely! Or I am frightened, not sure which! But, wow!
This tweet contains emotions: 
fear, joy, optimism