<https://eng.ambcrypto.com/#/schema/person/a8784e0bbda565a56129b741864bafc6>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://eng.ambcrypto.com/what-is-the-key-takeaway-from-bitcoins-contrasting-on-chain-metrics-and-sentiment/>