Original sentence: The executioners then left the room for several minutes to let the haze clear, and when they returned they killed Dr Botkin, Tsarevich Alexei and Grand Duchesses Olga and Tatiana
Edited sentence: The assassins then left the room for several minutes to let the haze clear, and when they returned they killed Dr Botkin, Tsarevich Alexei and Grand Duchesses Olga and Tatiana