Task: Evaluate the strength of emotion E in the tweet, providing a real-valued score from 0 to 1. A score of 0 denotes the absence of the emotion, while a score of 1 indicates the highest degree of intensity.
Tweet: @SkyUK I was just put on hold for 20 minutes till I hung up. #not happy #terribleservice #unhappy @virginmedia I should have stayed...
Emotion: sadness
Intensity score: 
0.818