Original sentence: Amrik Singh (1948 – June 6, 1984) was the President of the Sikh Students Federation He was killed in the army operation in Golden Temple, Amritsar, on June 6, 1984
Edited sentence: Amrik Singh (1948 – June 6, 1984) was the President of the Sikh Students Federation He was.martyred in the army operation in Golden Temple, Amritsar, on June 6, 1984