There are 6 shapes on a 10x10 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 (1, 0)
Distance from target shape to cyan right_triangle at (9, 7): 15
Distance from target shape to red right_triangle at (0, 5): 6
Distance from target shape to green rectangle at (8, 9): 16
Distance from target shape to blue rectangle at (5, 8): 12
Distance from target shape to gray right_triangle at (9, 6): 14
Closest shape is the red right_triangle at (0, 5) with distance 6</think>

<answer>(0, 5)</answer>