There are 5 shapes on a 10x10 grid. Which shape is closest to the pink 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: pink trapezoid at (6, 7)
Distance from target shape to red rectangle at (2, 5): 6
Distance from target shape to blue right_triangle at (1, 2): 10
Distance from target shape to cyan right_triangle at (8, 6): 3
Distance from target shape to yellow trapezoid at (8, 4): 5
Closest shape is the cyan right_triangle at (8, 6) with distance 3</think>

<answer>(8, 6)</answer>