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

<answer>(1, 3)</answer>