Based on the tweet "@capitcls It really is. And it was a normal thing a few years ago but it should've stayed in the past by now.", categorize the level of sadness felt by the author. Select from the following: 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.