Capital of Piedmont involving one in a revolution (5)
I believe the answer is:
turin
'capital of piedmont' is the definition.
'turin' can be an answer for 'capital' (I've seen this before). I am not certain of the 'of piedmont' bit.
'one in a revolution' is the wordplay.
'one' becomes 'i' (Roman numeral).
'in' means one lot of letters goes inside another.
'a revolution' becomes 'turn' (I've seen this in another clue).
'i' going into 'turn' is 'TURIN'.
'involving' acts as a link.
Can you help me to learn more?
(Other definitions for turin that I've seen before include "City of northwest Italy (with a shroud)" , "Industrial city in northwest Italy" , "Industrial city of Piedmont" , "City of north Italy" , "City abroad" .)