Given the emotion sadness and the tweet "@thixotropic No. Was so sudden. Hasn't sunk in yet. With Leo I knew it was coming.", rate the intensity of sadness shown. The rating scale is: 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.
2: moderate amount of sadness can be inferred