<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://pop.h-cdn.co/assets/cm/15/05/640x582/54cb07aa73e7f_-_ea-periscope-02-0213-lgn.jpg>
<http://www.popularmechanics.com/technology/a8725/early-adopter-how-to-build-a-periscope-15075808/?click=pm_latest>