There are 2 shapes on a 10x10 grid. Which shape is closest to the blue 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: blue rectangle at (8, 9)
Distance from target shape to gray rectangle at (9, 3): 7
Closest shape is the gray rectangle at (9, 3) with distance 7</think>

<answer>(9, 3)</answer>