For see you, the upper air is filled with phlogiston, which no man can breathe.
Human beings couldn't survive in the upper air.
The upper air is safe for human beings to breathe.
Gallic tribes were at war with Julius Caeser and were defeated.
A man looks at a fish.
Harry Cohn thought the romance between Sammy Davis Jr. and Kim Novak would have caused adverse publicity.
Three children are swimming in a river.
There are no women eating with the men.
One side is excluding people.