<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://pop.h-cdn.co/assets/cm/15/05/54cb0b84be5e0_-_3d-printed-food-01-0313-mdn.jpg>
<http://www.popularmechanics.com/technology/gadgets/a8816/will-3d-printers-manufacture-your-meals-15265101/>