There are 2 shapes on a 9x9 grid. Which shape is closest to the purple 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: purple square at (6, 5)
Distance from target shape to green right_triangle at (2, 4): 5
Closest shape is the green right_triangle at (2, 4) with distance 5</think>

<answer>(2, 4)</answer>