There are 4 shapes on a 9x9 grid. Which shape is closest to the gray 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: gray square at (7, 5)
Distance from target shape to blue rectangle at (5, 4): 3
Distance from target shape to cyan square at (6, 2): 4
Distance from target shape to brown rectangle at (0, 2): 10
Closest shape is the blue rectangle at (5, 4) with distance 3</think>

<answer>(5, 4)</answer>