Based on the tweet "@blackvoices Keep it up @gucci1017 #sober clear minded I see you over in Europe on tour killing the game right 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.