Given the emotion sadness and the tweet "'we need to do something. something must be done!!!!!'\n\nyour anxiety is amusing. nothing will be done. despair.", classify the intensity of the emotion displayed in the tweet. The classification options are: 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.