 Adverbs like usually, seldom, always, never can be taken to denote generalized quantifiers (an observation originally made in Lewis (1975)). For example, Dogs never meow is roughly synonymous with No dogs meow. But for  (38)  it can be argued that there is a reading where the quantifier applies to pairs: among the pairs consisting of a person and a fireman who rescues that person, a majority are such that the person is grateful. This is just the resumption of most to pairs, that we defined in \eqref{ex-qlist4}: