Given the emotion sadness and the tweet "Is it supposed to be this arduous to interact with other people? I'm 'other people' to them and they don't seem to struggle.", 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.