There are 3 shapes on a 9x9 grid. Which shape is closest to the green square in terms of Manhattan distance? The final answer is the grid position of the closest shape like (row_index, column_index).
<think>Target shape: green square at (0, 4)
Distance from target shape to yellow trapezoid at (4, 1): 7
Distance from target shape to gray square at (0, 2): 2
Closest shape is the gray square at (0, 2) with distance 2</think>

<answer>(0, 2)</answer>