There are 3 shapes on a 10x10 grid. Which shape is closest to the brown 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: brown right_triangle at (5, 2)
Distance from target shape to orange rectangle at (1, 5): 7
Distance from target shape to red right_triangle at (3, 3): 3
Closest shape is the red right_triangle at (3, 3) with distance 3</think>

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