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: penny dreadful just cleaved off a fraction of my heart
Emotion: sadness
Intensity class: 
1: low amount of sadness can be inferred