There are 3 shapes on a 9x9 grid. Which shape is closest to the brown rectangle 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 rectangle at (5, 7)
Distance from target shape to purple rectangle at (8, 3): 7
Distance from target shape to gray trapezoid at (7, 6): 3
Closest shape is the gray trapezoid at (7, 6) with distance 3</think>

<answer>(7, 6)</answer>