Where dad's on the right island (in the Seine?) (5)
I believe the answer is:
paris
'right island in the seine?' is the definition.
The definition and answer can be both locations as well as being singular nouns.
I also know that 'seine' relates to this answer.
'where dad's on' is the wordplay.
'where' becomes 'ri' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'dad's' becomes 'pa's' (both can mean one's father).
'on' means one lot of letters goes inside another (as in clothing 'on' a person).
'ri' put into 'pas' is 'PARIS'.
'the' acts as a link.
Can you help me to learn more?
(Other definitions for paris that I've seen before include "Prince of Troy - capital city" , "City; Juliet's betrothed Count" , "Trojan prince who abducted Helen" , "An American in - -" , "European capital -- Trojan prince" .)