There are 3 shapes on a 7x7 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, 6)
Distance from target shape to orange trapezoid at (4, 5): 3
Distance from target shape to brown trapezoid at (3, 5): 2
Closest shape is the brown trapezoid at (3, 5) with distance 2</think>

<answer>(3, 5)</answer>