Question computer experts over South American city (5)
I believe the answer is:
quito
'south american city' is the definition.
(capital of Ecuador)
'question computer experts over' is the wordplay.
'question' becomes 'qu' (abbreviation).
'computer experts' becomes 'it' (I can't justify this - if you can you should give a lot more credence to this answer).
'over' becomes 'o' (cricket abbreviation).
'qu'+'it'+'o'='QUITO'
Can you help me to learn more?
(Other definitions for quito that I've seen before include "Capital of Ecuador" , "S America" , "Ecuadorian capital" , "City" .)