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

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