Evaluate the tweet for the intensity of the emotion anger. The categories are as follows: 0: no anger can be inferred, 1: low amount of anger can be inferred, 2: moderate amount of anger can be inferred, 3: high amount of anger can be inferred.
Tweet: Joes gf started singing all star and then Joe got angry and was all sing it right and started angrily singing it back at her
2: moderate amount of anger can be inferred