There are 3 shapes on a 5x5 grid. Which shape is closest to the cyan 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: cyan rectangle at (4, 1)
Distance from target shape to red right_triangle at (3, 0): 2
Distance from target shape to pink rectangle at (2, 2): 3
Closest shape is the red right_triangle at (3, 0) with distance 2</think>

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