There are 3 shapes on a 10x10 grid. Which shape is closest to the brown 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: brown trapezoid at (9, 1)
Distance from target shape to pink trapezoid at (3, 6): 11
Distance from target shape to purple right_triangle at (9, 8): 7
Closest shape is the purple right_triangle at (9, 8) with distance 7</think>

<answer>(9, 8)</answer>