For the tweet "Learning is key while converting your leaning to someone else is door, so when you do both you will open the door of success.\n\n#x33 #smile", classify the intensity of the emotion joy. The possible classifications are: 0: no joy can be inferred, 1: low amount of joy can be inferred, 2: moderate amount of joy can be inferred, 3: high amount of joy can be inferred.
2: moderate amount of joy can be inferred