There are 4 shapes on a 9x9 grid. Which shape is closest to the green 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: green trapezoid at (7, 2)
Distance from target shape to yellow right_triangle at (2, 1): 6
Distance from target shape to blue rectangle at (0, 5): 10
Distance from target shape to orange rectangle at (8, 6): 5
Closest shape is the orange rectangle at (8, 6) with distance 5</think>

<answer>(8, 6)</answer>