The city of Genoa sells out (3,7)
I believe the answer is:
los angeles
'the city' is the definition.
(Los Angeles is an example)
'genoa sells out' is the wordplay.
'out' is an anagram indicator (out can mean wrong or inaccurate).
'genoa'+'sells'='genoasells'
'genoasells' anagrammed gives 'LOS ANGELES'.
'of' acts as a link.
(Other definitions for los angeles that I've seen before include "Big city" , "American city" , "Second most populous city in the US" , "Hollywood city" , "city abroad" .)