A man is playing the saxophone in the street and some people are sitting on the curb next to the street by him.
A woman is flying crosscountry.
A man is playing the saxophone or a woman is flying cross-country.
A person is either a man or woman while playing a saxophone in the street does not take place while flying crosscountry.
A person cannot be a man and woman at the same time. If a person is flying crosscountry, then the person cannot be playing the saxophone in the street with other people sitting on the curb.