There are 4 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 (2, 6)
Distance from target shape to yellow trapezoid at (1, 0): 7
Distance from target shape to blue trapezoid at (7, 2): 9
Distance from target shape to red rectangle at (7, 4): 7
Closest shape is the yellow trapezoid at (1, 0) with distance 7</think>

<answer>(1, 0)</answer>