Task: Determine the appropriate intensity category of emotion E for the tweet, reflecting the emotional state of the user. 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: I click on download on my PC. Message says 'Thank you for downloading #iTunes \nSo, where's the download?! #frustrated
Emotion: fear
Intensity class: 