There are 3 shapes on a 8x8 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 (2, 5)
Distance from target shape to orange right_triangle at (4, 0): 7
Distance from target shape to yellow square at (0, 3): 4
Closest shape is the yellow square at (0, 3) with distance 4</think>

<answer>(0, 3)</answer>