<https://blog.sertifier.com/#/schema/person/53c32ebe455103506a1e2e9ee0f6f3c1>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://blog.sertifier.com/2020/09/16/how-did-we-screw-up-a-product-hunt-launch/>