Using the tweet "'I think our dreams can motivate us more than our fears can paralyze us.'  ~  Chris Hogan  #dreams #fears #life", determine how much sadness is shown. The categories 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.