<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://pop.h-cdn.co/assets/cm/15/05/54caec6f07fbb_-_wtc1-photos-11-0512-smn.jpg>
<http://www.popularmechanics.com/technology/design/a7743/pm-visits-the-top-of-world-trade-center-1-9146815/>