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: The Zika #Hoax Files: DEET is part of a binary chemical weapon targeting your brain: #Toxin #fear #neurological #USCitizens #Insect #mammal
Emotion: fear
Intensity score: 
0.667