There are 2 shapes on a 9x9 grid. Which shape is closest to the pink 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: pink rectangle at (5, 1)
Distance from target shape to yellow square at (3, 7): 8
Closest shape is the yellow square at (3, 7) with distance 8</think>

<answer>(3, 7)</answer>