There are 4 shapes on a 9x9 grid. Which shape is closest to the gray 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: gray rectangle at (1, 1)
Distance from target shape to pink trapezoid at (0, 6): 6
Distance from target shape to cyan square at (8, 3): 9
Distance from target shape to purple right_triangle at (2, 6): 6
Closest shape is the pink trapezoid at (0, 6) with distance 6</think>

<answer>(0, 6)</answer>