Evaluate the tweet for the intensity of the emotion sadness. The categories are as follows: 0: no sadness can be inferred, 1: low amount of sadness can be inferred, 2: moderate amount of sadness can be inferred, 3: high amount of sadness can be inferred.
Tweet: @charles_gaba No, I am probably the person most likely to completely understand how gobsmacked you were to learn how true that is. #sadly
2: moderate amount of sadness can be inferred