Four elementary-aged children , two boys and two girls , play on a green lawn with a tree and a building in the background .
Four children are playing inside .
Four elementary-aged children, two boys and two girls, play on a green lawn with a tree and a building in the background.
Four children are playing inside.
if they are out by tree on the lawn the children cannot be inside.
if they are out by tree on the lawn the children can not be inside .