<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://ghk.h-cdn.co/assets/cm/15/11/5500454d9b1b2-marinara-sauce-7-ghv-325-41941865.jpg>
<http://www.goodhousekeeping.com/food-recipes/cooking/tips/g1961/quick-marinara-sauce/>