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"累積赤字1千億円超、地下鉄海岸線 開業20年、一度も黒字なし 神戸の下町、活性化遠く" [Cumulative Deficit of the Kaigan Line reaches 100 Billion Yen 20 Years Since Opening]. Kobe Shimbun Online (in Japanese). July 27, 2021. Archived from the original on July 28, 2021. Retrieved November 23, 2022.