There are 2 shapes on a 3x3 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 (0, 1)
Distance from target shape to pink right_triangle at (0, 2): 1
Closest shape is the pink right_triangle at (0, 2) with distance 1</think>

<answer>(0, 2)</answer>