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: 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