There are 6 shapes on a 6x6 grid. Which shape is closest to the pink 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: pink square at (3, 0)
Distance from target shape to purple right_triangle at (1, 4): 6
Distance from target shape to brown right_triangle at (3, 5): 5
Distance from target shape to gray rectangle at (4, 4): 5
Distance from target shape to orange square at (3, 3): 3
Distance from target shape to green rectangle at (0, 5): 8
Closest shape is the orange square at (3, 3) with distance 3</think>

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