There are 2 shapes on a 9x9 grid. Which shape is closest to the gray 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: gray rectangle at (6, 3)
Distance from target shape to blue rectangle at (0, 1): 8
Closest shape is the blue rectangle at (0, 1) with distance 8</think>

<answer>(0, 1)</answer>