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 (8, 3)
Distance from target shape to brown trapezoid at (2, 8): 11
Distance from target shape to red square at (0, 4): 9
Distance from target shape to gray trapezoid at (5, 3): 3
Distance from target shape to purple right_triangle at (5, 8): 8
Distance from target shape to orange rectangle at (8, 8): 5
Closest shape is the gray trapezoid at (5, 3) with distance 3</think>

<answer>(5, 3)</answer>