There are 6 shapes on a 4x4 grid. Which shape is closest to the green 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: green square at (0, 1)
Distance from target shape to pink square at (3, 3): 5
Distance from target shape to blue trapezoid at (3, 1): 3
Distance from target shape to orange trapezoid at (0, 2): 1
Distance from target shape to gray rectangle at (1, 0): 2
Distance from target shape to purple trapezoid at (3, 2): 4
Closest shape is the orange trapezoid at (0, 2) with distance 1</think>

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