<https://doctor.ndtv.com/faq/are-triline-and-tridot-tests-for-hiv-reliable-12251>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://doctor.ndtv.com/faq/are-triline-and-tridot-tests-for-hiv-reliable-12251>