There are 6 shapes on a 3x3 grid. Which shape is closest to the purple 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: purple rectangle at (0, 0)
Distance from target shape to orange square at (1, 0): 1
Distance from target shape to green rectangle at (2, 1): 3
Distance from target shape to gray square at (0, 1): 1
Distance from target shape to blue trapezoid at (1, 2): 3
Distance from target shape to pink rectangle at (2, 0): 2
Closest shape is the orange square at (1, 0) with distance 1</think>

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