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

<answer>(3, 1)</answer>