There are 2 shapes on a 6x6 grid. Which shape is closest to the red 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: red square at (4, 5)
Distance from target shape to purple right_triangle at (2, 0): 7
Closest shape is the purple right_triangle at (2, 0) with distance 7</think>

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