There are 4 shapes on a 10x10 grid. Which shape is closest to the pink 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: pink trapezoid at (8, 7)
Distance from target shape to green trapezoid at (6, 6): 3
Distance from target shape to brown rectangle at (3, 5): 7
Distance from target shape to purple rectangle at (8, 1): 6
Closest shape is the green trapezoid at (6, 6) with distance 3</think>

<answer>(6, 6)</answer>