There are 3 shapes on a 7x7 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 (2, 5)
Distance from target shape to cyan right_triangle at (3, 5): 1
Distance from target shape to purple rectangle at (4, 4): 3
Closest shape is the cyan right_triangle at (3, 5) with distance 1</think>

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