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 (8, 5)
Distance from target shape to orange square at (2, 5): 6
Distance from target shape to cyan right_triangle at (2, 4): 7
Distance from target shape to brown trapezoid at (5, 2): 6
Closest shape is the orange square at (2, 5) with distance 6</think>

<answer>(2, 5)</answer>