Search for missing passengers suspended after ship shifts

The transcript provides a chronological account of the opening dates of Tokyo Station by the Tokyo Metropolitan Railway. It begins with the initial opening in 1987, followed by subsequent openings in 1988, 1989, 1990, and 1991. Each section highlights the specific year and date of the opening, emphasizing the development and expansion of the Tokyo Station over these years.

1989年9月1日に東京都市鉄道東京駅は開業しましたか？

1991年4月1日に東京都市鉄道東京駅は開業したかどうかを説明してください。