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: .@WotzupCapeTown - thanks for sharing! Surprise guests! @HumanJurgen &amp; visiting US Tenor Sax @CunninghamColin. #livemusic #capetown #blues
Emotion: sadness
Intensity score: 
0.267