<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://wdy.h-cdn.co/assets/cm/15/09/480x552/54eba6d4229ff_-_german-shepherd-xl.jpg>
<http://www.womansday.com/life/pet-care/g846/history-of-dogs-and-cats/>