<https://co.pinterest.com/pin/the-trio-that-i-always-wanted-but-will-never-get--824862488004452596/>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://co.pinterest.com/pin/the-trio-that-i-always-wanted-but-will-never-get--824862488004452596/>