There are 3 shapes on a 10x10 grid. Which shape is closest to the blue 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: blue trapezoid at (9, 1)
Distance from target shape to pink rectangle at (8, 9): 9
Distance from target shape to green right_triangle at (0, 0): 10
Closest shape is the pink rectangle at (8, 9) with distance 9</think>

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