ISO IEC 21838-2:2021 pdf download – Information technology — Top-level ontologies (TLO) — Part 2: Basic Formal Ontology (BFO). 1 Scope This document describes Basic Formal Ontology (BFO), which is an ontology that is conformant to the requirements specified for top-level ontologies in ISO/IEC 21838-1. It describes BFO as a resource designed to support the interchange of information among heterogeneous information systems. The following are within the scope of this document: — definitions of BFO-2020 terms and relations; — axiomatizations of BFO-2020 in OWL 2 and CL; — documentation of the conformity of BFO-2020 to the requirements specified for top-level...