Please determine the intensity of the emotion sadness in the tweet "Their engine runs on fuel called whining :-)\n\nU jst  hv 2b observant..\nHar din Rona dhona &amp; complain. \nHappy news makes them unhappy :-)". Provide a score between 0 and 1, where 0 means very low intensity and 1 means very high intensity.
0.479