There are 5 shapes on a 10x10 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 rectangle at (1, 4): 2
Distance from target shape to purple rectangle at (1, 5): 1
Distance from target shape to green trapezoid at (4, 9): 6
Distance from target shape to blue right_triangle at (4, 4): 3
Closest shape is the purple rectangle at (1, 5) with distance 1</think>

<answer>(1, 5)</answer>