Riddle: Romeo and Juliet are found dead on the floor in a bedroom. When they were discovered, there were pieces of glass and some water on the floor. The only furniture in the room is a shelf and a bed. The house in is a remote location, away from everything except for the nearby railway track. What caused the death of Romeo and Juliet?
Romeo and Juliet are fish. The rumble of the train knocked the tank off the shelf.