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

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