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.