<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://pop.h-cdn.co/assets/cm/15/05/480x360/54cb1c4dc92df_-_airport-security-05-1013-de.jpg>
<http://www.popularmechanics.com/flight/g1308/6-better-ways-to-keep-airports-safe/>