There are 3 shapes on a 5x5 grid. Which shape is closest to the pink rectangle in terms of Manhattan distance? The final answer is the grid position of the closest shape like (row_index, column_index).
<think>Target shape: pink rectangle at (1, 3)
Distance from target shape to yellow trapezoid at (0, 0): 4
Distance from target shape to purple trapezoid at (1, 2): 1
Closest shape is the purple trapezoid at (1, 2) with distance 1</think>

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