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 (2, 0)
Distance from target shape to blue square at (0, 2): 4
Distance from target shape to yellow trapezoid at (2, 2): 2
Distance from target shape to orange right_triangle at (0, 0): 2
Distance from target shape to green square at (1, 1): 2
Distance from target shape to red rectangle at (0, 1): 3
Closest shape is the yellow trapezoid at (2, 2) with distance 2</think>

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