<https://www.huffpost.com/entry/your-life-purpose-what-gives-your-life-meaning_b_59ce70a4e4b034ae778d4a0a>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://www.huffpost.com/entry/your-life-purpose-what-gives-your-life-meaning_b_59ce70a4e4b034ae778d4a0a>