Task: Analyze the tweet's sentiment and assign it to either 'neutral or no emotion' or one or more of the specified emotions (anger, anticipation, disgust, fear, joy, love, optimism, pessimism, sadness, surprise, trust).
Tweet: 75' Tierney reaches a deep cross to the back post and plays it back across but the Alloa defence clear. Celtic relentless here.
This tweet contains emotions: 
sadness