Three children are playing outdoors , two of them on a metal barrel swing .
Three children are at a park near their houses .
Three children are playing outdoors, two of them on a metal barrel swing.
Three children are at a park near their houses.
There are two children playing, but we don't know if it is a park or near their houses.
There are two children playing , but we do n't know if it is a park or near their houses .