There are 4 shapes on a 9x9 grid. Which shape is closest to the yellow 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: yellow square at (7, 2)
Distance from target shape to purple square at (5, 5): 5
Distance from target shape to brown right_triangle at (4, 7): 8
Distance from target shape to blue right_triangle at (2, 2): 5
Closest shape is the purple square at (5, 5) with distance 5</think>

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