There are 2 shapes on a 6x6 grid. Which shape is closest to the blue 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: blue rectangle at (3, 0)
Distance from target shape to purple rectangle at (5, 5): 7
Closest shape is the purple rectangle at (5, 5) with distance 7</think>

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