<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://wdy.h-cdn.co/assets/cm/15/09/640x430/54ebb01342841_-_wd-08-pet-resolutions-brushing-dogs-teeth-xln.jpg>
<http://www.womansday.com/life/pet-care/g1024/healthy-pets-in-2013/>