There are 5 shapes on a 6x6 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 (5, 0)
Distance from target shape to brown square at (2, 5): 8
Distance from target shape to cyan trapezoid at (4, 1): 2
Distance from target shape to pink trapezoid at (2, 4): 7
Distance from target shape to yellow trapezoid at (2, 3): 6
Closest shape is the cyan trapezoid at (4, 1) with distance 2</think>

<answer>(4, 1)</answer>