There are 3 shapes on a 6x6 grid. Which shape is closest to the brown 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: brown square at (2, 5)
Distance from target shape to red square at (0, 5): 2
Distance from target shape to yellow square at (5, 4): 4
Closest shape is the red square at (0, 5) with distance 2</think>

<answer>(0, 5)</answer>