answers: killer's skin under fingernails
questions: what evidence is under the fingernails? where is the skin evidence?
paragraph: #ifidieinpolicecustody look under my fingernails. The skin of the person who killed me will be there...— Charles M. Blow (@CharlesMBlow) July 18, 2015
questions_answers: question: what evidence is under the fingernails?, answer: killer's skin | question: where is the skin evidence?, answer: under fingernails