There are 6 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 (0, 5)
Distance from target shape to red trapezoid at (4, 4): 5
Distance from target shape to gray square at (2, 5): 2
Distance from target shape to purple right_triangle at (4, 1): 8
Distance from target shape to cyan square at (4, 3): 6
Distance from target shape to green trapezoid at (5, 3): 7
Closest shape is the gray square at (2, 5) with distance 2</think>

<answer>(2, 5)</answer>