There are 4 shapes on a 10x10 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 (1, 7)
Distance from target shape to brown trapezoid at (1, 3): 4
Distance from target shape to purple trapezoid at (6, 0): 12
Distance from target shape to cyan trapezoid at (5, 5): 6
Closest shape is the brown trapezoid at (1, 3) with distance 4</think>

<answer>(1, 3)</answer>