Complex sentence: Moreover, as prisoners, Holwell and three other men were transferred to Murshidabad; the remaining survivors of the Black Hole of Calcutta were freed after the victory of a relief expedition commanded by Sir Robert Clive.
Split into simpler sentences: Moreover, as prisoners, Holwell and three other men were transferred to Murshidabad. The remaining survivors of the Black Hole of Calcutta were freed after the victory of a relief expedition commanded by Sir Robert Clive.