<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://ghk.h-cdn.co/assets/cm/15/11/768x516/54feae67a50a5-ghk-learning-resources-primary-science-set-1210-xl.jpg>
<http://www.goodhousekeeping.com/childrens-products/toy-reviews/g221/good-housekeeping-best-toy-awards-2010/?src=shelter_footer>