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

<answer>(3, 2)</answer>