There are 5 shapes on a 10x10 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 (5, 8)
Distance from target shape to gray trapezoid at (3, 0): 10
Distance from target shape to orange right_triangle at (5, 2): 6
Distance from target shape to cyan rectangle at (2, 0): 11
Distance from target shape to red right_triangle at (4, 8): 1
Closest shape is the red right_triangle at (4, 8) with distance 1</think>

<answer>(4, 8)</answer>