There are 2 shapes on a 10x10 grid. Which shape is closest to the brown 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: brown square at (5, 4)
Distance from target shape to green square at (4, 9): 6
Closest shape is the green square at (4, 9) with distance 6</think>

<answer>(4, 9)</answer>