<http://www.w3.org/1999/02/22-rdf-syntax-ns#first>
<http://ghk.h-cdn.co/assets/cm/15/12/55090b30d7b12-0112-trader-joes-gold-quality-balsamic-vinegar-aexmut-msc.jpg>
<http://www.goodhousekeeping.com/food-products/balsamic-vinegar/a18331/balsamic-vinegar-taste-test/>