There are 2 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 (5, 5)
Distance from target shape to green trapezoid at (4, 5): 1
Closest shape is the green trapezoid at (4, 5) with distance 1</think>

<answer>(4, 5)</answer>