There are 6 shapes on a 6x6 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 (1, 0)
Distance from target shape to blue rectangle at (5, 2): 6
Distance from target shape to brown trapezoid at (4, 1): 4
Distance from target shape to cyan square at (3, 5): 7
Distance from target shape to orange square at (2, 5): 6
Distance from target shape to purple rectangle at (0, 2): 3
Closest shape is the purple rectangle at (0, 2) with distance 3</think>

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