Crossword Genius

Green bovine at core of catastrophic AI error (3-7)

Ross

I believe the answer is:

eco-warrior

I'm a little stuck... Click here to teach me more about this clue!

'green' is the definition.
(I've seen this before)

'bovine at core of catastrophic ai error' is the wordplay.
I cannot quite see how this works, but
'bovine' could be 'cow' (cow is a kind of bovine) and 'cow' is located in the answer.
'of' could be 'o' and 'o' is found within the answer.
This may be the basis of the clue (or it may be nonsense).

Can you help me to learn more?

(Other definitions for eco-warrior that I've seen before include "Zealous environmentalist" , "Activist" , "Militant greenie" .)

I've seen this clue in The Guardian.
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