Assess the level of the emotion sadness in the tweet provided. Use the following categories: 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.
Tweet: All I'm learning about at college atm is Sylvia Plath, Stalin's purges and natural disasters, gloomy af
3: high amount of sadness can be inferred