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

<answer>(4, 2)</answer>