Given the emotion sadness and the tweet "@Virgin_TrainsEC I feel for the conductor tonight, he's obviously taken grief over the last few weeks, he sounds weary of apologising!", classify the intensity of the emotion displayed in the tweet. The classification options 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.
2: moderate amount of sadness can be inferred