Owen entered the lounge. Elizabeth entered the lounge. Nathan entered the lounge. The plum is in the green envelope. Owen moved the plum to the red drawer. Elizabeth exited the lounge. Nathan exited the lounge. Owen exited the lounge. Elizabeth entered the lounge.
The plum at the beginning was in the green envelope.
 the plum at the beginning was in the red_drawer
 the plum at the beginning was in the green_envelope