<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://clv.h-cdn.co/assets/cm/15/09/54eb552eef273_-_clx-cat-at-vet-0412-xln.jpg>
<http://www.countryliving.com/life/kids-pets/g1628/pet-health-questions/>