There are 3 shapes on a 9x9 grid. Which shape is closest to the orange 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: orange trapezoid at (6, 4)
Distance from target shape to pink trapezoid at (5, 3): 2
Distance from target shape to gray right_triangle at (0, 1): 9
Closest shape is the pink trapezoid at (5, 3) with distance 2</think>

<answer>(5, 3)</answer>