<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://pop.h-cdn.co/assets/cm/15/05/640x320/54cb284cb0d18_-_owl-tech-0214-de.jpg>
<http://www.popularmechanics.com/technology/infrastructure/a10049/owl-wings-hold-the-secrets-for-noise-canceling-tech-16462834/>