There are 5 shapes on a 9x9 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, 4)
Distance from target shape to red right_triangle at (8, 8): 10
Distance from target shape to yellow trapezoid at (3, 5): 2
Distance from target shape to gray square at (2, 1): 3
Distance from target shape to purple trapezoid at (4, 7): 5
Closest shape is the yellow trapezoid at (3, 5) with distance 2</think>

<answer>(3, 5)</answer>