There are 2 shapes on a 7x7 grid. Which shape is closest to the red square 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 square at (3, 0)
Distance from target shape to blue rectangle at (4, 5): 6
Closest shape is the blue rectangle at (4, 5) with distance 6</think>

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