There are 3 shapes on a 9x9 grid. Which shape is closest to the pink 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: pink rectangle at (6, 8)
Distance from target shape to green right_triangle at (3, 8): 3
Distance from target shape to orange rectangle at (7, 0): 9
Closest shape is the green right_triangle at (3, 8) with distance 3</think>

<answer>(3, 8)</answer>