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{ "define": [ { "$": "square" }, { "n": { "$": "Int" } }, { "$": "Int" }, { "*": [{ "$": "n" }, { "$": "n" }] } ], "message": ["", "This program returns 4^2 + 5^2 = 41."], "+": [{ "square": [4] }, { "square": [5] }] }