The conversation between human and AI assistant.
[|Human|] Given this paragraph about South Korea, which body of water forms the country's western border and which body of water borders it's eastern border?
[|AI|] The western border of South Korea is formed by the Yellow Sea, while the eastern border is formed by the Sea of Japan.
[|Human|] 
Given this paragraph about South Korea, which body of water forms the country's western border and which body of water borders it's eastern border?