There are 3 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 (3, 2)
Distance from target shape to cyan right_triangle at (4, 3): 2
Distance from target shape to purple rectangle at (0, 2): 3
Closest shape is the cyan right_triangle at (4, 3) with distance 2</think>

<answer>(4, 3)</answer>