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 (0, 3)
Distance from target shape to orange square at (4, 4): 5
Distance from target shape to green right_triangle at (1, 4): 2
Distance from target shape to gray rectangle at (1, 1): 3
Closest shape is the green right_triangle at (1, 4) with distance 2</think>

<answer>(1, 4)</answer>