<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://ghk.h-cdn.co/assets/15/14/980x704/gallery-1428080712-vacuum-cleaner2.jpg>
<http://www.goodhousekeeping.com/home/cleaning/tips/g717/places-you-forget-to-clean/?src=shelter_footer>