Task: Categorize the tweet into an intensity level of the specified emotion E, representing the mental 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: I love Mary's undying optimism. You could present her with dog shite and she'd find something good to say. #GBBO
Emotion: joy
Intensity class: 
2: moderate amount of joy can be inferred