There are 3 shapes on a 9x9 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 (2, 1)
Distance from target shape to gray right_triangle at (4, 0): 3
Distance from target shape to green rectangle at (1, 0): 2
Closest shape is the green rectangle at (1, 0) with distance 2</think>

<answer>(1, 0)</answer>