Abigail entered the staircase. Mila entered the staircase. The lemon is in the green envelope. Abigail moved the lemon to the blue pantry. Logan entered the staircase. Mila exited the staircase.
The lemon at the beginning was in the green envelope.
 the lemon at the beginning was in the blue_pantry
 the lemon at the beginning was in the green_envelope