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: Angry shouting match between a #pessimist &amp; an #optimist:\n'You're a half empty-headed @%$!' \n'You're half full of @%$!'
Emotion: sadness
Intensity class: 
2: moderate amount of sadness can be inferred