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

<answer>(2, 3)</answer>