National relationship mentioned (4)
I believe the answer is:
thai
'national' is the definition.
('Thai' is an example)
'relationship mentioned' is the wordplay.
'relationship' becomes 'tie' (tie is a kind of relationship).
'mentioned' shows a homophone (sound like).
'tie' is a homophone of 'THAI'.
(Other definitions for thai that I've seen before include "Morte d'16author" , "SE Asian" , "An Asian cuisine" , "Asian language" , "One from Bangkok" .)