Page "Knowledge representation and reasoning" Paragraph 41

Ontologies can of course be written down in a wide variety of languages and notations ( e. g., logic, LISP, etc.

); the essential information is not the form of that language but the content, i. e., the set of concepts offered as a way of thinking about the world.

Simply put, the important part is notions like connections and components, not whether we choose to write them as predicates or LISP constructs.