Task: Categorize the tweet based on the intensity of the specified emotion E, capturing the tweeter's mental state. 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: My son 11 has 128 friends on Facebook and yet is moping around the house complaining he has no one to talk to. I'm right here son
Emotion: sadness
Intensity class: 
1: low amount of sadness can be inferred