A girl with a blue shirt and a girl with a striped shirt stand next to a girl with a green shirt sitting in a chair.
The three best friends just got finished playing a game of musical chairs.
Three girls together are not necessarily best friends who just finished playing a game.
Three girls together aren't always best friends. Girls sitting in chairs does not necessarily mean they were playing musical chairs.
Because there are three girls does not mean they are best friends.  Sitting in a chair does not mean they had to be playing a game of musical chairs.