Task: Measure the level of emotion E in the tweet using a real-valued score between 0 and 1, where 0 represents the lowest intensity and 1 represents the highest intensity.
Tweet: Historically Japanese have always been into #jazz and #blues. The 70s dark age of jazz big names like C.C. &amp; M.D. were surviving on Tokyo.
Emotion: sadness
Intensity score: 
0.375