<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://wdy.h-cdn.co/assets/cm/15/09/768x516/54ebbcda3dec8_-_two-cats-meeting-xl-28661822.jpg>
<http://www.womansday.com/life/pet-care/g1227/pet-friends/>