<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://wdy.h-cdn.co/assets/cm/15/09/54ebb9b4e7e09_-_3-woman-crying-xl.jpg>
<http://www.womansday.com/health-fitness/womens-health/advice/g1183/sleep-deprivation-effects/>