<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://ghk.h-cdn.co/assets/cm/15/11/480x552/54ff0c234f7aa-rbk-flea-collar-xln.jpg>
<http://www.goodhousekeeping.com/life/pets/advice/g595/pet-health-risks/>