A person from America for instance produced, for example, turkey from Alabama (8)
I believe the answer is:
national
'a person' is the definition.
(national is a kind of person)
'turkey from alabama' is the wordplay.
'turkey' becomes 'nation' (I can't explain this - if you can you should believe this answer much more).
'from' means one lot of letters go next to another.
'alabama' becomes 'al'.
'nation'+'al'='NATIONAL'
'from america for instance produced for example' is the link.
This may not be correct. Some or all of it may be part of another bit of the clue.
Can you help me to learn more?
(Other definitions for national that I've seen before include "Relating to a country" , "Owned by the state" , "Major newspaper" , "It's a Grand race at Aintree" , "Relating to the state" .)