Using the tweet "psa: if you read while you're laying out you sort of forget about the boiling sun and the sweat poring down your face 🙌", determine how much sadness is shown. The categories are: 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.