There are 4 shapes on a 9x9 grid. Which shape is closest to the yellow 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: yellow trapezoid at (6, 1)
Distance from target shape to green rectangle at (0, 2): 7
Distance from target shape to red rectangle at (3, 4): 6
Distance from target shape to gray trapezoid at (5, 0): 2
Closest shape is the gray trapezoid at (5, 0) with distance 2</think>

<answer>(5, 0)</answer>