  In earlier parts of this article, among the examples of intensions and partial intensions have been “the present King of France,” “the tallest person,” and “the oldest person.” One could add to these “the number of people,” and “the positive solution of \(x^{2} - 9 = 0\).” All have been specified using definite descriptions. In a temporal model, the first three determine partial intensions (there have been instants of time with no people); the fourth determines an intension that is not partial; the fifth determines an intension that is rigid.