There are 4 shapes on a 5x5 grid. Which shape is closest to the pink 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: pink trapezoid at (3, 2)
Distance from target shape to orange rectangle at (1, 0): 4
Distance from target shape to purple square at (4, 4): 3
Distance from target shape to red right_triangle at (3, 1): 1
Closest shape is the red right_triangle at (3, 1) with distance 1</think>

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