There are 6 shapes on a 10x10 grid. Which shape is closest to the purple square 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 square at (5, 6)
Distance from target shape to orange rectangle at (9, 5): 5
Distance from target shape to brown rectangle at (0, 6): 5
Distance from target shape to yellow trapezoid at (2, 5): 4
Distance from target shape to cyan rectangle at (4, 9): 4
Distance from target shape to green right_triangle at (0, 8): 7
Closest shape is the yellow trapezoid at (2, 5) with distance 4</think>

<answer>(2, 5)</answer>