has participant quality an object property that represents a relation between a process and a quality, in which the process has a participant that has the quality. Yongqun He An adverse event has a participant quality, such as a hyperkalemia AE has a participatn quality blood potassium increased. This is a shortcut relation of the following full version: 'has participant' some (participant 'has quality' ) in: process 'has participant' some (participant 'has quality' some quality)