There are 6 shapes on a 9x9 grid. Which shape is closest to the pink 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: pink square at (6, 8)
Distance from target shape to purple trapezoid at (2, 3): 9
Distance from target shape to gray rectangle at (5, 3): 6
Distance from target shape to blue trapezoid at (5, 5): 4
Distance from target shape to orange trapezoid at (4, 6): 4
Distance from target shape to cyan rectangle at (5, 2): 7
Closest shape is the blue trapezoid at (5, 5) with distance 4</think>

<answer>(5, 5)</answer>