<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://wdy.h-cdn.co/assets/cm/15/09/160x213/54eb8144efc87_-_smart-sprinkler-mdn.jpg>
<http://www.womansday.com/home/g153/home-gadgets-that-make-life-a-little-easier-90678/>