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

<answer>(3, 1)</answer>