There are 6 shapes on a 10x10 grid. Which shape is closest to the yellow 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: yellow trapezoid at (9, 1)
Distance from target shape to red rectangle at (1, 2): 9
Distance from target shape to green right_triangle at (3, 9): 14
Distance from target shape to blue trapezoid at (8, 6): 6
Distance from target shape to pink square at (4, 0): 6
Distance from target shape to purple trapezoid at (2, 4): 10
Closest shape is the blue trapezoid at (8, 6) with distance 6</think>

<answer>(8, 6)</answer>