 Hohfeld arranged the four incidents in tables of “opposites” and “correlatives” so as to display the logical structure of his system. In order to fill out the tables he added some further terminology. For instance, if a person A has a claim, then A lacks a “no-claim” (a no-claim is the opposite of a claim). And if a person A has a power, then some person B has a “liability” (a liability is the correlative of a power).