Two young man and a man play pool hitting white balls with a cue stick.  The young man hits balls that land in the pocket of the pool table.  Then, the man puts the balls in a metal triangle and arrange others balls.  After, the  young man strikes the white ball but immidiately stop it with the cue sticks.  Next, the young man strikes the balls and sends a white ball to a pocket.  The man strikes a white ball and send balls in the pocket.  At the end, the young man puts the ball inside a metal triangle.