Task: Assign a suitable level of intensity of emotion E to the tweet, representing the emotional state of the tweeter. 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: Optimism leads to success. - Bill Kerr @Coach__Kerr #success  #goals
Emotion: joy
Intensity class: 