Task: Rate the intensity of emotion E in the tweet on a scale of 0 to 1, with 0 indicating the least intensity and 1 indicating the highest intensity.
Tweet: After spending £450 @Debenhams I was offered a £5 voucher. I asked if I could spend it at weekend? Was told 'no valid today only' #unhappy
Emotion: sadness
Intensity score: 
0.814