On September 18, 2018, Yamamoto died from stomach cancer.
On September 18, 2018, Yamamoto died of cancer in Tokyo; he was 41 years old.
On September 18, 2018, Yamamoto died of cancer in Tokyo; he was 41 years old.
わかりやすくするためにこの文を書き直してください: On September 18, 2018, Yamamoto died from stomach cancer. 出力: