There are 2 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 (4, 4)
Distance from target shape to brown right_triangle at (5, 5): 2
Closest shape is the brown right_triangle at (5, 5) with distance 2</think>

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