Task: Categorize the tweet's emotional expression, classifying it as either 'neutral or no emotion' or as one or more of the specified emotions (anger, anticipation, disgust, fear, joy, love, optimism, pessimism, sadness, surprise, trust) that reflect the tweeter's state of mind.
Tweet: Such merriment &amp; laughter from @dadwroteaporno at @KingsPlace &amp; an instructional PowerPoint presentation.Well done to all concerned &amp; thanks
This tweet contains emotions: 
joy, optimism