The following layer deals with "the text as a complete linguistic unit" (36), which involves the information flow as presented by Halliday's theme and rheme, types of marked themes, or a number of interesting strategies related to information structure, such as voice change or extraposition
b.' V-to-T on a head-final account: movement of S to Spec, T + movement of V to T + extraposition
Toward a construction-based theory of language function: the case of nominal extraposition
. In Language, vol.
Only 8.13% of the test takers chose the correct answer when the genitive is part of a complex sentence as is the case with the extraposition
of a clausal subject: It was Tom's good idea to go swimming, while 48.00% of the students answer correctly when the genitive is found in a simple sentence: This isn't my book.
2006, The Syntax of Ke-Clause and Clausal Extraposition
in Modern Persian, Austin (PhD Thesis.
Due to space limitations, the sentence-type under analysis in this paper is exclusively the one showing the order in (1): the construction that is referred to in Chomsky (2001: 25) as the rightward variant of Th/Ex (There are expected to be caught many fish, There was elected a new candidate) belongs to work in progress, though it can be advanced here that this is expected to be analysed as the result of an extraposition
process applying to a configuration like (1) above.
On the syntax and semantics of PP extraposition
. Linguistic Inquiry 11.
The most widespread topical pattern is OB, and indeed in Semitic in general, is topical extraposition
:  awilum bissu biti "As for the man, his house is my house." (145:16)
(8) For such speakers, apparently, at most one phrase can be in extraposition
with the indefinite article.