There are 2 shapes on a 8x8 grid. Which shape is closest to the blue right_triangle in terms of Manhattan distance? The final answer is the grid position of the closest shape like (row_index, column_index).
<think>Target shape: blue right_triangle at (5, 2)
Distance from target shape to red right_triangle at (3, 0): 4
Closest shape is the red right_triangle at (3, 0) with distance 4</think>

<answer>(3, 0)</answer>