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: @RoryPlays_  I was so busy yesterday I forgot to wish u a happy birthday so here I got HAPPY BELATED BIRTHDAY I hope u had a wonderful day
Emotion: joy
Intensity class: 