A SYNOPSIS OF ROLE AND REFERENCE GRAMMAR 147
This is not possible when there is no single lexical verb to paraphrase the V
- NP, as in What did Mary dispute the claim that Fred bought?. In the case
of make the claim, lexical semantic factors override (111) and allow the sub
ordinate clause to be in the PFD, meeting (130). This phenomenon man
ifests itself in a number of constructions, e.g. Who did you read a book
about? = Who did you read about? but not Who did you deface a book
about?. Thus lexical semantic factors play a crucial role in determining the
possibility of question formation in various constructions, and a full expla
nation of restrictions on question formation must address the effects lexical
semantics can have on the information structure of sentences.
As is well known, languages vary with respect to the restrictions placed
on question formation, and the approach sketched here makes it possible to
identify the parameters along which languages will vary. There are two
major ones: (1) how "deep" into the sentence does (111) apply?, and (2)
how much can lexical semantic factors override (111)? (Northern) German
and Russian, for example, permit question formation only out of main
clauses, and therefore (111) does not apply to them at all. It is an empirical
question as to how deep (111) may be valid, and it may turn out that it is an
all or nothing opposition: either a language allows question formation out
of at least some subordinate clauses, as in English and Lakhota, or it does
not allow it out of any subordinate clauses, e.g. Russian and German.^65
The second parameter is dependent on the first; if a language restricts
question formation to main clauses, then there is nothing for lexical
semantic factors to override. This parameter is meaningful only in lan
guages in which question formation is possible out of at least some subordi
nate clauses. English and Danish provide a contrast here. Erteschik-Shir
(1973) and Erteschik-Shir & Lappin (1979) show that in Danish it is possi
ble to have question formation out of some relative clauses, if the main
clause is relatively semantically empty and the head noun is non-specific or
generic; for example, the Danish equivalent of What are there many who
like? is grammatical. Most English speakers seem to reject questions like
this one, and therefore it appears that lexical semantic factors may play a
stronger role in Danish in licensing question formation in violation of (111)
than in English. The influence of lexical semantic factors in these construc
tions in different languages can only be ascertained through empirical inves
tigation.