There are 2 shapes on a 7x7 grid. Which shape is closest to the orange 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: orange right_triangle at (2, 2)
Distance from target shape to gray right_triangle at (3, 5): 4
Closest shape is the gray right_triangle at (3, 5) with distance 4</think>

<answer>(3, 5)</answer>