Task: Estimate the strength of emotion E in the tweet by assigning it a real-valued score between 0 and 1, where 0 signifies the least intensity and 1 signifies the greatest intensity.
Tweet: Over 70% of social sharing is dark &amp; over 50% of web traffic comes from #darksocial. @colinzalewski #LIFTSocial
Emotion: sadness
Intensity score: 
0.479