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 (7, 5)
Distance from target shape to orange square at (6, 6): 2
Distance from target shape to pink right_triangle at (2, 4): 6
Closest shape is the orange square at (6, 6) with distance 2</think>

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