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: Patti seems so sad. She stamped and ran behind the sofa. We will have to give her plenty of love and affection...more than usual.
2: moderate amount of sadness can be inferred