Advances in Role and Reference Grammar

A SYNOPSIS OF ROLE AND REFERENCE GRAMMAR 141

The first sentence, (129a), can be interpreted as either a WH-question, with
the meaning given, or a yes-no question with the meaning "does he think
someone stole the meat?". However, in (129b,c) táku "what" is outside the
PFD and therefore cannot be interpreted as a WH-word in a WH-question;
it must be interpreted as an indefinite pronoun in a yes-no question, as the
acceptable glosses indicate.
These facts follow from the principle governing the PFD in complex sen­
tences presented in (111). Simplified representations of the operator and con­
stituent projections of the sentences in (129) are given in Figure 49.

Figure 49