There are 3 shapes on a 5x5 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 (0, 1)
Distance from target shape to purple rectangle at (4, 0): 5
Distance from target shape to blue rectangle at (3, 3): 5
Closest shape is the purple rectangle at (4, 0) with distance 5</think>

<answer>(4, 0)</answer>