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No TPTP formula. May not be expressible in strict first order. Geography.kif 5179-5179 子類 河口 and 水體
No TPTP formula. May not be expressible in strict first order. Geography.kif 5180-5180 子類 河口 and SaltWaterArea
No TPTP formula. May not be expressible in strict first order. Geography.kif 5181-5181 子類 河口 and 進口


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