A group of children that are either sitting or standing in a line , while two are holding a round object .
It is highly likely that a group of children are in a line , while two are holding a ball .
It is highly likely that a group of children are in a line , while two are holding a ball .
There is little chance that a group of children are in a line , while two are holding a ball .
A group of children are in a line , while two are holding a ball .