There are 6 shapes on a 5x5 grid. Which shape is closest to the green rectangle 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 rectangle at (4, 0)
Distance from target shape to gray right_triangle at (4, 3): 3
Distance from target shape to brown square at (1, 4): 7
Distance from target shape to yellow right_triangle at (2, 0): 2
Distance from target shape to orange right_triangle at (0, 2): 6
Distance from target shape to pink right_triangle at (3, 4): 5
Closest shape is the yellow right_triangle at (2, 0) with distance 2</think>

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