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

<answer>(1, 0)</answer>