彼は鉄道事故で死んだ。

tbd

He was killed in a railroad accident.

東京駅での鉄道事故はどうして起こったのですか。

tbd

How did the railway accident at Tokyo Station happen?

How did the railway accident at Tokyo Station come about?

その鉄道事故で死者三名、重軽傷者１０名が出た。

tbd

Three persons were killed and ten were severely or slightly injured in the railway accident.