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

<answer>(6, 4)</answer>