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 (2, 2)
Distance from target shape to pink right_triangle at (3, 2): 1
Closest shape is the pink right_triangle at (3, 2) with distance 1</think>

<answer>(3, 2)</answer>