user_prompt: ## Instruction:
  Upon entering the room, there is a left hall and one to the right. The left hall contains a cube slot, while the right hall leads to a button linked with a cube machine that produces a cube. Further ahead, there is a big hall with a platform on the left wall that can be elevated to reach a button at mid-height. Additionally, there is a button high up on the roof.
  The cube is in the cube slot, which elevates the platform to the button at mid-height.
  Pressing the button at mid-height activates the red beam that allows hovering over the rift.
  
  Select the correct options for each blank. Only output option letters one by one, with the format '{Option 1}{Option 2}{Option 3}{Option 4}{Option 5}, such as 'ABCDE'
  Step 1: ________
  Step 2: ________
  Step 3: Place a portal right on top of cube switch.
  Step 4: ________
  Step 5: Stand on platform and shoot second portal under the cube so that it falls into the cube switch and platform where protagonist stands on lifts off.
  Step 6: ________
  Step 7: Make portal close to the roof to press the topmost button on the roof (left close to entrance). This opens the final door.
  Step 8: ________
  Step 9: Exit the beam at the end of the room and go through the final door. Problem solved.
  
  Please select from the following candidate choices. Your response should end with "The final answer is [answer]." where the [answer] is the choice of options. 
  A. Press the button on the left.
  B. Fetch the mirror cube that spawns in the main room and place it facing to the left (when looking at the glass window) into the teleport machine.
  C. Make a portal on the ground and one on the wall where the gravitation beam lands and get pulled into the beam to hover across the room.
  D. Place the cube close to the entrance of the hall.
  E. Collect cube with a portal from the roof.
  F. Go down into the center hall, step on the red button (far from the entrance) to remove the shield wall to zone 3. Shoot a blue portal where the color machine drops color and an orange portal right behind the cube in zone 3 at the wall at the lowest height. This hits the cube and colors it blue, making it jump around and come down into the hall.
  G. Place cube close to the platform.
  H. Press button that is reached with elevated platform (activates gravitation beam).
  I. Place one mirror cube on the teleport machine facing straight ahead toward the glass wall. Activate the teleport machine.
  J. Press button on the right.