There are 4 shapes on a 3x3 grid. Which shape is closest to the green rectangle in terms of Manhattan distance? The final answer is the grid position of the closest shape like (row_index, column_index).
<think>Target shape: green rectangle at (0, 0)
Distance from target shape to gray trapezoid at (2, 2): 4
Distance from target shape to pink right_triangle at (1, 2): 3
Distance from target shape to cyan trapezoid at (2, 0): 2
Closest shape is the cyan trapezoid at (2, 0) with distance 2</think>

<answer>(2, 0)</answer>