 The horizontal rows of the matrix represent the different propositions expressed by the sentence in each context of use. Each utterance expresses a different contingent proposition, as can be seen by the fact that each contains both ‘T’s and ‘F’s, and that the patterns differ. The 2D matrix also graphically represents the fact that the sentence is guaranteed to be true whenever uttered. Notice the diagonal of the matrix running from the top left corner to the bottom right, which contains all ‘T’s. This reflects the fact that the sentence is guaranteed to be true whenever uttered. With a nod to Stalnaker (1978), we can call this the diagonal intension of the sentence. In Kaplan’s semantic framework, a necessary diagonal intension indicates that a sentence is logically valid and  analytic.[5]