There are 2 shapes on a 10x10 grid. Which shape is closest to the green rectangle 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 rectangle at (8, 9)
Distance from target shape to red right_triangle at (2, 6): 9
Closest shape is the red right_triangle at (2, 6) with distance 9</think>

<answer>(2, 6)</answer>