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: When you're on a train as its pitch black outside and you have no idea where you are... #travel #whereami #lost #adventure
This tweet contains emotions: 
fear, joy, optimism