There are 3 shapes on a 8x8 grid. Which shape is closest to the purple 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: purple trapezoid at (7, 0)
Distance from target shape to orange rectangle at (5, 7): 9
Distance from target shape to pink square at (0, 5): 12
Closest shape is the orange rectangle at (5, 7) with distance 9</think>

<answer>(5, 7)</answer>