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: Why is it when you nap during the day you are so comfortable but sleeping at night you'll never be as comfortable
This tweet contains emotions: 
anger, anticipation, sadness