There are 5 shapes on a 9x9 grid. Which shape is closest to the green 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: green trapezoid at (0, 1)
Distance from target shape to yellow trapezoid at (6, 7): 12
Distance from target shape to blue trapezoid at (0, 7): 6
Distance from target shape to cyan right_triangle at (8, 0): 9
Distance from target shape to purple right_triangle at (3, 8): 10
Closest shape is the blue trapezoid at (0, 7) with distance 6</think>

<answer>(0, 7)</answer>