A young woman wearing a yellow shirt and off-white shorts is reading a book while sitting on a park bench.
A woman reading a book while she sits on a bench waiting for the bus.
A woman can read a book on a park bench without waiting for a bus.
Sitting on a park bench does not imply waiting for the bus.
Just because a young woman wearing a yellow shirt and off-white shorts is reading a book while sitting on a park bench does not mean she is waiting for the bus.