<https://adsy.me/home_questions/what-types-of-knots-can-be-used-for-a-bow-tie/#breadcrumb>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://adsy.me/home_questions/what-types-of-knots-can-be-used-for-a-bow-tie/>