Crossword Genius

A question of property (5)

Ross

I believe the answer is:

whose

I'm a little stuck... Click here to teach me more about this clue!

'a question of property' is the definition.
I don't know anything about this answer so I cannot tell whether this works.

'question of property' is the wordplay.
'question' becomes 'who' (who is a question word).
'of property' becomes 'se' (I am not sure about this - if you are sure you should believe this answer much more).
'who'+'se'='WHOSE'

Can you help me to learn more?

(Another definition for whose that I've seen is " Of which person".)

I've seen this clue in The Globe and Mail.
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