<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://wdy.h-cdn.co/assets/cm/15/09/768x516/54eba16f4c809_-_5-laptop-xl-73961494.jpg>
<http://www.womansday.com/home/organizing-cleaning/tips/g826/celebrate-earth-day-2012/>