Task: Determine the degree of intensity for emotion E in the tweet, giving it a score between 0 and 1, where 0 signifies the least intensity and 1 signifies the greatest intensity.
Tweet: Not written for African-American\n\nNo refuge could save the hireling and slave\nFrom the terror of flight or the gloom of the grave,
Emotion: sadness
Intensity score: 
0.583