There are 2 shapes on a 8x8 grid. Which shape is closest to the yellow rectangle 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 rectangle at (4, 4)
Distance from target shape to brown right_triangle at (5, 2): 3
Closest shape is the brown right_triangle at (5, 2) with distance 3</think>

<answer>(5, 2)</answer>