There are 4 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 (1, 4)
Distance from target shape to blue square at (0, 2): 3
Distance from target shape to cyan rectangle at (4, 0): 7
Distance from target shape to brown right_triangle at (2, 2): 3
Closest shape is the blue square at (0, 2) with distance 3</think>

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