Task: Question Answering
Input (English): Charlotte entered the staircase. Abigail entered the staircase. The watermelon is in the red_envelope. Abigail exited the staircase. Charlotte moved the watermelon to the blue_bathtub. Charlotte exited the staircase. Abigail entered the staircase. Where is the watermelon really?
Output (English): blue_bathtub