<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://wdy.h-cdn.co/assets/cm/15/09/160x213/54eb85daa417e_-_washing-soda-mdn.jpg>
<http://www.womansday.com/home/organizing-cleaning/tips/g265/10-alternative-household-cleansers-4713/?link=emb&dom=yah_life&src=syn&con=blog_wd&mag=wdy>