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

<answer>(0, 4)</answer>