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

<answer>(3, 2)</answer>