There are 3 shapes on a 5x5 grid. Which shape is closest to the red 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: red rectangle at (1, 0)
Distance from target shape to brown square at (0, 4): 5
Distance from target shape to green square at (4, 2): 5
Closest shape is the brown square at (0, 4) with distance 5</think>

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