There are 2 shapes on a 8x8 grid. Which shape is closest to the green 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: green rectangle at (4, 4)
Distance from target shape to purple trapezoid at (5, 4): 1
Closest shape is the purple trapezoid at (5, 4) with distance 1</think>

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