There are 3 shapes on a 9x9 grid. Which shape is closest to the yellow trapezoid in terms of Manhattan distance? The final answer is the grid position of the closest shape like (row_index, column_index).
<think>Target shape: yellow trapezoid at (1, 1)
Distance from target shape to blue square at (6, 6): 10
Distance from target shape to pink square at (6, 4): 8
Closest shape is the pink square at (6, 4) with distance 8</think>

<answer>(6, 4)</answer>