There are 2 shapes on a 6x6 grid. Which shape is closest to the cyan 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: cyan rectangle at (3, 1)
Distance from target shape to pink square at (1, 4): 5
Closest shape is the pink square at (1, 4) with distance 5</think>

<answer>(1, 4)</answer>