Task: Categorize the tweet's emotional tone as either 'neutral or no emotion' or identify the presence of one or more of the given emotions (anger, anticipation, disgust, fear, joy, love, optimism, pessimism, sadness, surprise, trust).
Tweet: What a sad evening - clearing out all of Harvey's cage and belongings. Now so final. Goodbye my little man.... #depressing
This tweet contains emotions: 
sadness