{"@context":{"obo_purl":"http://purl.obolibrary.org/obo/","rdf":"http://www.w3.org/1999/02/22-rdf-syntax-ns#","owl":"http://www.w3.org/2002/07/owl#","rdfs":"http://www.w3.org/2000/01/rdf-schema#"},"@id":"obo_purl:IAO_0000410","@type":["owl:NamedIndividual","obo_purl:IAO_0000409"],"rdfs:label":"universal","obo_purl:IAO_0000117":"Alan Ruttenberg","obo_purl:IAO_0000116":"Hard to give a definition for. Intuitively a \"natural kind\" rather than a collection of any old things, which a class is able to be, formally. At the meta level, universals are defined as positives, are disjoint with their siblings, have single asserted parents.","obo_purl:IAO_0000119":"A Formal Theory of Substances, Qualities, and Universals, http://ontology.buffalo.edu/bfo/SQU.pdf"}