Where the yes-man goes when he retires? (4,2,3)
I believe the answer is:
land of nod
'where the yes-man goes' is the definition.
The definition suggests a singular noun which matches the answer.
'he retires?' is the wordplay.
I cannot quite understand how this works, but
'he' could be 'land' and 'land' is located in the answer.
This explanation may well be incorrect...
'when' acts as a link.
Can you help me to learn more?
(Other definitions for land of nod that I've seen before include "dropping-off area?" , "east of 27 [EDEN]" , "Where Cain went after slaying Abel" , "Where Cain went after killing Abel" , "Sleepy region" .)