<http://www.w3.org/1999/02/22-rdf-syntax-ns#rest>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#nil>
<http://www.netdoctor.co.uk/healthy-living/sexual-health/news/a27039/teen-girls-taking-the-pill-doubles-the-risk-of-depression/>