Task: Categorize the tweet based on the intensity of the specified emotion E, capturing the tweeter's mental state. 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: Time to go hit up the library - I have a lovely PILE of book reservations to collect this morning...  #books #reading
Emotion: joy
Intensity class: 