<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://wdy.h-cdn.co/assets/cm/15/09/160x213/54eb7f14afced_-_pop-on-those-headphones-mdn.jpg>
<http://www.womansday.com/health-fitness/wellness/advice/g135/8-habits-that-keep-you-calm-1491/>