'the one you said you liked best' - Analysis of a relative clause using CGEL

I'm currently reading "A Student's Introduction to English Grammar" by Geoffrey K. Pullum and Rodney Huddleston.

I'm bewildered by the following exercise, which asks us to identify the relative phrase, along with the relative element, its function and its antecedent.

Which is the one you said you liked best?

My analysis is as follows: Which is the one [you said [you liked best]]? I treat which as part of the main clause (even though one could make a point to the contrary, I basically treat it as This in This is the one you said you liked best.

you liked best — subordinate content clause

you said you liked best — relative clause

antecedent — the one

function of the covert relativised element (in the relative clause) - direct object

Does anyone with knowledge of the CGEL (The Cambridge Grammar of the English Language) framework have any input on this? In particular, I'm interested whether Which can be considered to be the antecedent, or maybe even part of the relative clause itself.

Solution 1:

In comments Araucaria wrote:

There is no relative phrase as this is a 'bare' relative. The relativised element is the gap after the verb liked in the VP [liked ___ best]. Its syntactic function is direct object of the verb liked. Its antecedent is the nominal one as indicated in @Billj 's comment above. (there's no which in this relative clause, and so the gap relates directly to the antecedent not indirectly through relating to the relative word which in turn relates to the antecedent).

Note carefully that the word which in the matrix clause is a distractor here!!! It is an interrogative word (more specifically an interrogative determinative heading a fused determiner-head construction). The syntactic function of this NP is subject of the matrix clause, in other words the subject of the verb is. It is completely unrelated to the relative clause!