Heart of the Corn Belt (4)

I believe the answer is:

iowa

'heart of the corn belt' is the definition.
(I've seen this in another clue)

This is all the clue.

(Other definitions for iowa that I've seen before include "US state, capital Des Moines" , "Central US state" , "'Hawkeye State'" , "part of United States" , "US swing electoral state" .)

I've seen this clue in the Newsday, the Newsday.com and the USA Today.

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