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

<answer>(4, 7)</answer>