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

<answer>(3, 4)</answer>