<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://wdy.h-cdn.co/assets/cm/15/09/160x213/54eb8db5788df_-_invest-in-the-best-mdn.jpg>
<http://www.womansday.com/life/pet-care/g451/choosing-the-best-food-for-your-pet-73422/>