a) She tore up the letter, which upset me (because it was from someone I once loved).b) She tore up the letter which upset me (because it was from someone who was blackmailing me.)In b) the clause is indubitably rankshifted: it's a post-modifying qualifier in a nominal group--no different from "of England" in "the King of England's crown".But why can't I consider the clause in a) to be a Circumstance of "She tore up" or some way of complexing the verbal group in the main clause? Why do I have to consider it a ranking clause in its own right?
I don't get why you are changing the subject, though. The question is about rank, The issue is whether the clause is part of a nominal group or part of a verb complex or (the standard interpretation) a clause complex. …
I do not analyse the instance as a verbal group complex. In truth, I don't see any ambiguity whatsoever: one is a nominal group complex and the other is a hypotactic clause.
If, however, I were applying Merge (or "subjacency"), I would have to argue that "which" is a merged conjunction and pronoun, and therefore the sentence is agnate to "She tore up the letter and upset me", which is a verbal group complex. One more reason for preferring the SFL account.
Blogger Comments:
[1] To be clear, in SFL Theory, (a) is a hypotactic clause complex in which the elaborating dependent clause is a non-defining relative clause:
While the dominant element has to be a nominal group, dependent elements can be adverbial groups or prepositional phrases.

























