<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://wdy.h-cdn.co/assets/cm/15/09/160x213/54eb7f8a7809b_-_fight-insomnia-with-lowfat-yogurt-mdn.jpg>
<http://www.womansday.com/health-fitness/nutrition/advice/g139/34-stay-healthy-superfoods-5411/>