There are 6 shapes on a 10x10 grid. Which shape is closest to the gray 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: gray rectangle at (2, 5)
Distance from target shape to cyan trapezoid at (7, 0): 10
Distance from target shape to blue trapezoid at (7, 2): 8
Distance from target shape to red rectangle at (8, 3): 8
Distance from target shape to yellow trapezoid at (8, 6): 7
Distance from target shape to purple rectangle at (3, 1): 5
Closest shape is the purple rectangle at (3, 1) with distance 5</think>

<answer>(3, 1)</answer>