<https://thekidshouldseethis.com/post/a-time-lapse-of-sol-lewitts-wall-drawing-797#article>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://thekidshouldseethis.com/post/a-time-lapse-of-sol-lewitts-wall-drawing-797>