(7) (a) John was persuaded by Bill to leave; (b) John was persuaded by Bill to be examined [...] In both (7a) and (7b), 'Bill' is the ("logical") Subject-of the Sentence, rather than 'John', which is the so-called "grammatical" Subject-of the Sentence, that is, the Subject with respect to the surface structure. - Chomsky (1969), a pag.70