There are 4 shapes on a 10x10 grid. Which shape is closest to the yellow 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: yellow trapezoid at (1, 1)
Distance from target shape to red trapezoid at (1, 7): 6
Distance from target shape to gray rectangle at (3, 9): 10
Distance from target shape to cyan trapezoid at (6, 5): 9
Closest shape is the red trapezoid at (1, 7) with distance 6</think>

<answer>(1, 7)</answer>