Capital in Bulgaria, then: Sofia (6)

I believe the answer is:

athens

'capital' is the definition.
(Athens is an example)

'in bulgaria then sofia' is the wordplay.
'in' indicates a hidden word.
'ATHENS' is hidden in the letters of 'bulgaria then sofia'.

(Other definitions for athens that I've seen before include "6 capital" , "Mediterranean capital" , "Hen sat down in the city" , "City of the Parthenon" , "Site of the Parthenon" .)

I've seen this clue in The Times.

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