There are 6 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, 1)
Distance from target shape to orange right_triangle at (2, 1): 2
Distance from target shape to pink square at (0, 3): 2
Distance from target shape to green trapezoid at (4, 0): 5
Distance from target shape to blue square at (2, 0): 3
Distance from target shape to yellow rectangle at (3, 4): 6
Closest shape is the orange right_triangle at (2, 1) with distance 2</think>

<answer>(2, 1)</answer>