def ends_up_at_start(input_text):
    # Step 1: Parse the input text to extract the instructions. Output the instructions for logging.
    instructions = extract_instructions(input_text)
    print("Instructions:", instructions)

    # Step 2: Initialize the current position and direction. The initial position is (0, 0) and the initial direction is north. Output the initial position and direction for logging.
    current_position = (0, 0)
    current_direction = 'north'
    print("Initial position:", current_position)
    print("Initial direction:", current_direction)

    # Step 3: Process each instruction. For each instruction, update the current position and direction based on the instruction. Output the current position and direction after each instruction for logging.
    for i, instruction in enumerate(instructions):
        if is_move_instruction(instruction):
            steps = extract_steps(instruction)
            current_position = update_position(current_position, current_direction, steps)
        elif is_turn_instruction(instruction):
            turn_direction = extract_turn_direction(instruction)
            current_direction = update_direction(current_direction, turn_direction)
        print(f"After instruction {i}: position - {current_position}, direction - {current_direction}")

    # Step 4: Compare the final position with the initial position. If they are the same, the answer is 'Yes'; otherwise, the answer is 'No'. Output the final position and the answer for logging.
    final_position = current_position
    print("Final position:", final_position)
    if final_position == (0, 0):
        answer = 'Yes'
    else:
        answer = 'No'
    print("Answer:", answer)

    return answer

# Helper functions:
def extract_instructions(input_text):
    # Extract the instructions from the input text.
    pass

def is_move_instruction(instruction):
    # Determine whether the instruction is to move.
    pass

def extract_steps(instruction):
    # Extract the number of steps from the move instruction.
    pass

def update_position(current_position, current_direction, steps):
    # Update the current position based on the current direction and the number of steps.
    pass

def is_turn_instruction(instruction):
    # Determine whether the instruction is to turn.
    pass

def extract_turn_direction(instruction):
    # Extract the turn direction from the turn instruction.
    pass

def update_direction(current_direction, turn_direction):
    # Update the current direction based on the turn direction.
    pass