<http://www.w3.org/1999/02/22-rdf-syntax-ns#rest>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#nil>
<http://www.womansday.com/health-fitness/womens-health/how-to/a4837/how-to-tackle-every-kind-of-tummy-trouble-105746/>