There are 3 shapes on a 10x10 grid. Which shape is closest to the cyan square in terms of Manhattan distance? The final answer is the grid position of the closest shape like (row_index, column_index).
<think>Target shape: cyan square at (8, 2)
Distance from target shape to green trapezoid at (6, 1): 3
Distance from target shape to yellow right_triangle at (5, 6): 7
Closest shape is the green trapezoid at (6, 1) with distance 3</think>

<answer>(6, 1)</answer>