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, 6)
Distance from target shape to yellow rectangle at (2, 3): 9
Distance from target shape to gray right_triangle at (3, 2): 9
Distance from target shape to brown rectangle at (4, 5): 5
Closest shape is the brown rectangle at (4, 5) with distance 5</think>

<answer>(4, 5)</answer>