There are 3 shapes on a 10x10 grid. Which shape is closest to the pink 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: pink rectangle at (0, 9)
Distance from target shape to purple trapezoid at (2, 1): 10
Distance from target shape to cyan right_triangle at (8, 8): 9
Closest shape is the cyan right_triangle at (8, 8) with distance 9</think>

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