There are 6 shapes on a 9x9 grid. Which shape is closest to the pink square 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 square at (0, 3)
Distance from target shape to purple trapezoid at (4, 6): 7
Distance from target shape to gray right_triangle at (7, 1): 9
Distance from target shape to orange rectangle at (5, 6): 8
Distance from target shape to red right_triangle at (2, 5): 4
Distance from target shape to green right_triangle at (6, 1): 8
Closest shape is the red right_triangle at (2, 5) with distance 4</think>

<answer>(2, 5)</answer>