There are 3 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 (5, 5)
Distance from target shape to brown trapezoid at (8, 2): 6
Distance from target shape to yellow trapezoid at (5, 4): 1
Closest shape is the yellow trapezoid at (5, 4) with distance 1</think>

<answer>(5, 4)</answer>