There are 6 shapes on a 5x5 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 (4, 0)
Distance from target shape to gray right_triangle at (3, 2): 3
Distance from target shape to purple right_triangle at (3, 0): 1
Distance from target shape to brown right_triangle at (2, 4): 6
Distance from target shape to green rectangle at (3, 4): 5
Distance from target shape to orange square at (1, 3): 6
Closest shape is the purple right_triangle at (3, 0) with distance 1</think>

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