There are 3 shapes on a 9x9 grid. Which shape is closest to the cyan square in terms of Manhattan distance? The final answer is the grid position of the closest shape like (row_index, column_index).
<think>Target shape: cyan square at (3, 2)
Distance from target shape to gray square at (1, 8): 8
Distance from target shape to purple right_triangle at (0, 8): 9
Closest shape is the gray square at (1, 8) with distance 8</think>

<answer>(1, 8)</answer>