There are 2 shapes on a 10x10 grid. Which shape is closest to the green 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: green square at (8, 8)
Distance from target shape to brown rectangle at (8, 4): 4
Closest shape is the brown rectangle at (8, 4) with distance 4</think>

<answer>(8, 4)</answer>