Task: Classify the tweet into one of four ordinal classes of intensity of emotion E that best represents 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: The ecosystem is meant to break thru the wall of #apprehension. It's easy to follow a fave music star &amp; watch their goings on–but #dentists?
Emotion: fear
Intensity class: 
0: no fear can be inferred