Task: Determine the appropriate intensity class for the tweet, reflecting the level of emotion E experienced by 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: @CovinoandRich just heard back2back,  guess that's why they call it the blues &amp; she's got the look, but I can only sing tickle sacks version
Emotion: sadness
Intensity class: 