Task: Determine the sentiment intensity or valence score of the tweet, representing the tweeter's mental state on a continuum from 0 (highly negative) to 1 (highly positive).
Tweet: @musicfae15 [He grumbled as he sat atop the sushi bar stool, crossing his arms defiantly, in a playful gesture, though he gave anyone who &gt;
Intensity score: 
0.550