One black female and one white female plus three white males , all wearing forms of black , in front of a concrete stair structure with other people sitting on the stairs .
There is a better than even chance that a group of friends are sitting on the stairs .
It is improbable that a group of friends are sitting on the stairs .
There is a better than even chance that a group of friends are sitting on the stairs .
A group of friends are sitting on the stairs .