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

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