There are 6 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 (5, 6)
Distance from target shape to blue right_triangle at (9, 1): 9
Distance from target shape to brown trapezoid at (8, 4): 5
Distance from target shape to gray trapezoid at (5, 5): 1
Distance from target shape to green rectangle at (9, 6): 4
Distance from target shape to red square at (2, 4): 5
Closest shape is the gray trapezoid at (5, 5) with distance 1</think>

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