Task: Determine the appropriate intensity class for the tweet, reflecting the level of emotion E experienced by the user. 0: no E can be inferred. 1: low amount of E can be inferred. 2: moderate amount of E can be inferred. 3: high amount of E can be inferred.
Tweet: @Apple thanks for ios10 update, even the best app @telegram freezing and crashing on SE. #angry
Emotion: anger
Intensity class: 
3: high amount of anger can be inferred