<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://hbu.h-cdn.co/assets/cm/15/04/320x426/54c048c3b12f4_-_3-hbx-air-purifier-0412-lgn.jpg>
<http://www.housebeautiful.com/shopping/home-gadgets/tips/g1198/healthy-home-products-remedies-0412/>