There are 6 shapes on a 5x5 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 (3, 3)
Distance from target shape to gray trapezoid at (3, 0): 3
Distance from target shape to cyan rectangle at (0, 0): 6
Distance from target shape to pink square at (1, 2): 3
Distance from target shape to orange rectangle at (2, 0): 4
Distance from target shape to yellow square at (0, 2): 4
Closest shape is the gray trapezoid at (3, 0) with distance 3</think>

<answer>(3, 0)</answer>