Task: Identify the primary emotion conveyed in the tweet and assign it to either 'neutral or no emotion' or one or more of the provided emotions (anger, anticipation, disgust, fear, joy, love, optimism, pessimism, sadness, surprise, trust) that best capture the tweeter's mental state.
Tweet: 18' \nMichael Carrick as struck the back of the net much to the delight of under pressure man u fanz and MOU...
This tweet contains emotions: 
sadness