There are 4 shapes on a 9x9 grid. Which shape is closest to the orange 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: orange rectangle at (4, 6)
Distance from target shape to brown rectangle at (7, 5): 4
Distance from target shape to green rectangle at (1, 4): 5
Distance from target shape to cyan trapezoid at (5, 3): 4
Closest shape is the brown rectangle at (7, 5) with distance 4</think>

<answer>(7, 5)</answer>