Task: Calculate the intensity of emotion E in the tweet as a decimal value ranging from 0 to 1, with 0 representing the lowest intensity and 1 representing the highest intensity.
Tweet: — to reveal a broad smile. \n\n'Yeah, it's nice.' \n\nPursing his lips, he stifled his joyous expression in order —\n\n[@AVIATAUBE].
Emotion: joy
Intensity score: 
0.542