Based on the tweet "Are you #depressed? There is #hope. Keep going #forward and don't give up. There's always a reason to keep going - find it", 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.