There are 2 shapes on a 6x6 grid. Which shape is closest to the red 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: red rectangle at (0, 5)
Distance from target shape to pink rectangle at (1, 5): 1
Closest shape is the pink rectangle at (1, 5) with distance 1</think>

<answer>(1, 5)</answer>