<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://wdy.h-cdn.co/assets/cm/15/10/320x426/54f5f9e01c623_-_01-pet-breeds-cats-dogs-lgn.jpg>
<http://www.womansday.com/life/pet-care/g846/history-of-dogs-and-cats/>