A boy in a blue hat and a yellow backpack is carrying a box while walking down the street .
It is impossible that a girl with a purple backpack carries a food tray in her bicycle basket .
It is impossible that a girl with a purple backpack carries a food tray in her bicycle basket .
It is highly likely that a girl with a purple backpack carries a food tray in her bicycle basket .
A girl with a purple backpack carries a food tray in her bicycle basket .