There are 5 shapes on a 7x7 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 (6, 2)
Distance from target shape to gray right_triangle at (4, 6): 6
Distance from target shape to brown right_triangle at (4, 0): 4
Distance from target shape to blue rectangle at (4, 5): 5
Distance from target shape to pink right_triangle at (6, 0): 2
Closest shape is the pink right_triangle at (6, 0) with distance 2</think>

<answer>(6, 0)</answer>