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

<answer>(2, 6)</answer>