<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://ghk.h-cdn.co/assets/cm/15/11/550045b66fc14-hard-boil-eggs-1-ghv-325-63937429.jpg>
<http://www.goodhousekeeping.com/food-recipes/cooking/tips/g1984/how-hard-boil-egg/>