<https://www.nancyhyatt.com/single-post/2016/04/19/571644e80cf2dd6f7fc5cdeb>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://www.nancyhyatt.com/single-post/2016/04/19/Should-I-Stay-or-Should-I-Go-Now>