Evaluate how intense the emotion sadness is in the tweet "#TONITEinASHEVILLE: @TALsounds w/Matchess, Nothing But Net &amp; Mushigo Palm @themothlight, #blues dance @TBobAVL 11pm\n#avlent #avlmusic #AVL". Provide your answer as a real number between 0 and 1 inclusive.