There are 4 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 (2, 5)
Distance from target shape to orange square at (6, 9): 8
Distance from target shape to gray right_triangle at (1, 9): 5
Distance from target shape to cyan right_triangle at (9, 3): 9
Closest shape is the gray right_triangle at (1, 9) with distance 5</think>

<answer>(1, 9)</answer>