There are 5 shapes on a 10x10 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 (9, 6)
Distance from target shape to yellow square at (6, 1): 8
Distance from target shape to pink rectangle at (4, 5): 6
Distance from target shape to blue trapezoid at (5, 3): 7
Distance from target shape to orange rectangle at (2, 4): 9
Closest shape is the pink rectangle at (4, 5) with distance 6</think>

<answer>(4, 5)</answer>