Article is itself sent back from the continent (4)
I believe the answer is:
asia
'the continent' is the definition.
(Asia is an example)
'article is itself sent back' is the wordplay.
'article' becomes 'a' (the indefinite article in English).
'is itself' becomes 'ais' (I am not sure about this - if you are sure you should believe this answer much more).
'sent back' is a reversal indicator.
'ais' in reverse letter order is 'sia'.
'a'+'sia'='ASIA'
'from' is the link.
Can you help me to learn more?
(Other definitions for asia that I've seen before include "Largest land-mass" , "A great deal of land" , "Continent bordering three oceans" , "its pampered jades couldn't draw much?" , "Heavily populated area" .)