There are 2 shapes on a 10x10 grid. Which shape is closest to the purple 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: purple trapezoid at (4, 9)
Distance from target shape to cyan trapezoid at (1, 8): 4
Closest shape is the cyan trapezoid at (1, 8) with distance 4</think>

<answer>(1, 8)</answer>