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: Worst thing that's happened to you when flying? I had a 16h delay, left my phone in the terminal, and wallet on the plane #nightmare
Emotion: fear
Intensity class: 
3: high amount of fear can be inferred