Peter, Mary, Susan, Michael, Barbara, John, are riding the train to the big city. They do not know each other. The train stops at a small town. It waits there for a long time.

Peter: The train is very quiet.
Susan: What is happening?      
John:  It hasn't got any power.
Barbara:  Can't the men fix their train? 
Michael: We'll sit on this train past dinner. 

will who what which we we'll eat
Mary: Who (Be serious. Try again.) ____ ____ ____?