<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://pop.h-cdn.co/assets/cm/15/06/54d0e7bc1f4b8_-_window-reglazing-04-0812-de.jpg>
<http://www.popularmechanics.com/home/interior-projects/how-to/a8043/how-to-reglaze-a-window/>