There are 4 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 (0, 4)
Distance from target shape to yellow right_triangle at (6, 0): 10
Distance from target shape to red trapezoid at (5, 8): 9
Distance from target shape to pink square at (6, 2): 8
Closest shape is the pink square at (6, 2) with distance 8</think>

<answer>(6, 2)</answer>