<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://wdy.h-cdn.co/assets/cm/15/09/54eac98066ec2_-_08-shutterstock_53442739-1.jpg>
<http://www.womansday.com/home/organizing-cleaning/tips/a1659/solutions-for-your-toughest-cleaning-problems-108125/>