There are 3 shapes on a 3x3 grid. Which shape is closest to the pink 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: pink rectangle at (1, 0)
Distance from target shape to red rectangle at (2, 1): 2
Distance from target shape to blue rectangle at (1, 1): 1
Closest shape is the blue rectangle at (1, 1) with distance 1</think>

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