<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://ghk.h-cdn.co/assets/cm/15/11/768x516/54fed636bd0da-4-ghk-green-your-pets-routine-walk-dog-outside-xln.jpg>
<http://www.goodhousekeeping.com/life/pets/advice/g314/green-pet-care/>