Based on the given tweet, determine the level of sadness the author is experiencing. Choose from the following options: 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: @jeremycorbyn @magstogether my god is @jeremycorbyn a full shilling? Seriously you need a major rethink or no lab gove in your lifetime #sad
3: high amount of sadness can be inferred