There are 2 shapes on a 10x10 grid. Which shape is closest to the purple rectangle in terms of Manhattan distance? The final answer is the grid position of the closest shape like (row_index, column_index).
<think>Target shape: purple rectangle at (4, 8)
Distance from target shape to orange right_triangle at (6, 8): 2
Closest shape is the orange right_triangle at (6, 8) with distance 2</think>

<answer>(6, 8)</answer>