<http://schema.org/image>
<http://ghk.h-cdn.co/assets/cm/15/11/54ffdee85c296-ghk-cleaning-windows-de.jpg>
<http://www.goodhousekeeping.com/home/cleaning/tips/a24724/cleaning-wrong/?link=rel&dom=yah_life&src=syn&con=blog_gh&mag=ghk>