<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://wdy.h-cdn.co/assets/cm/15/10/320x240/54f5fb771bd01_-_1-woman-dog-lgn-61715874.jpg>
<http://www.womansday.com/life/pet-care/g1009/how-smart-are-dogs/>