 (44a) is the initial semantic representation associated with (43), in which three presuppositions remain to be resolved. The first of these, triggered by the pronoun “his”, is bound to the discourse referent representing Fred, which results in (44b). The second presupposition, that Fred has a son, cannot be bound, and therefore must be interpreted by way of accommodation. Van der Sandt’s theory, like Heim’s (Heim, 1983), stipulates that accommodation at the global level, as shown in (44c), is preferred to accommodation at other sites. Finally, the presupposition triggered by the focus particle can be bound in the antecedent of the conditional; after simplification, this results in (44d), which represents the most natural way of interpreting (43).