<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://del.h-cdn.co/assets/cm/15/10/320x320/54f64853251f9_-_1-travel-sandwich-ps0813-de.jpg>
<http://www.delish.com/kitchen-tools/kitchen-secrets/how-to/g267/assemble-perfect-sandwich-for-road/>