Predicates such as ‘to be tall’, ‘to be related to Chomsky’ or ‘to know Latin’, which intuitively denote permanent properties, are called individual-level predicates (henceforth: i-predicates); predicates such as ‘to be available’, ‘to talk to Chomsky’ or ‘to study Latin’, which denote properties not necessarily permanent, are called stage-level predicates (henceforth: s-predicates). An impress...