There are 4 shapes on a 9x9 grid. Which shape is closest to the purple trapezoid 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 trapezoid at (7, 2)
Distance from target shape to orange right_triangle at (7, 6): 4
Distance from target shape to blue square at (1, 6): 10
Distance from target shape to red trapezoid at (8, 0): 3
Closest shape is the red trapezoid at (8, 0) with distance 3</think>

<answer>(8, 0)</answer>