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: Happy birthday to Stephen King, a man responsible for some of the best horror of the past 40 years... and a whole bunch of the worst.
Emotion: fear
Intensity class: 