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

<answer>(3, 6)</answer>