Revision as of 10:14, 24 July 2024 by Epfo-admin(talk | contribs)(Created a new Property: subclass of, this item is a subclass (subset) of that item; all instances of this item are instances of that item; different from P31 (instance of), e.g.: K2 is an instance of mountain; volcano is a subclass of mountain (and an instance of volcanic landform))