Subject for example in story (5)
I believe the answer is:
'subject' is the definition.
(I've seen this before)
'example in story' is the wordplay.
'example' becomes 'eg'.
'in' indicates putting letters inside.
'story' becomes 'lie' (story can mean a fabrication).
'eg' inserted within 'lie' is 'LIEGE'.
'for' acts as a link.
(Other definitions for liege that I've seen before include "Sort of lord", "Belgian, French-speaking city", "old lord", "Belgian city - master - servant", "Feudal (lord); vassal".)