One in seat from the capital of Bulgaria (5)

I believe the answer is:

sofia

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

This could be a double definition.

'one in seat' is the first definition.
'Sofia' can be an answer for 'seat' (Sofia is an example). I'm not sure about the 'one in' bit.

'the capital of bulgaria' is the second definition.
(I've seen this before)

'from' acts as a link.

Can you help me to learn more?

(Other definitions for sofia that I've seen before include "capital place" , "Bulgarian city" , "seat of government" , "Foreign city" , "capital city" .)

I've seen this clue in The Daily Express.

Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.