<https://coderlessons.com/tutorials/bazy-dannykh/uznaite-pouchdb/uchebnik-po-pouchdb#webpage>
<http://www.w3.org/1999/02/22-rdf-syntax-ns#type>
<https://coderlessons.com/tutorials/bazy-dannykh/uznaite-pouchdb/uchebnik-po-pouchdb>