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 (6, 6)
Distance from target shape to cyan trapezoid at (7, 5): 2
Distance from target shape to yellow rectangle at (6, 5): 1
Distance from target shape to red square at (3, 6): 3
Distance from target shape to orange right_triangle at (3, 5): 4
Closest shape is the yellow rectangle at (6, 5) with distance 1</think>

<answer>(6, 5)</answer>