Sources — Main Entity
Institutional and technical reference points.
Knowledge Representation
Thomas R. Gruber — A Translation Approach to Portable Ontology Specifications
Semantic Systems
W3C — RDF 1.1 Concepts and Abstract Syntax
W3C — OWL 2 Web Ontology Language Document Overview
Entity-Centric Information Structures
Library of Congress — Linked Data Service
Wikidata — Introduction