What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? For all x, if x were a janitor, then x is drinking water. For all x, if x were a sailor, then x is a janitor. For all x, if x drinks water, then x is playing a game. For all x, if x plays a game, then x is a sailor.
For all x, if x were a janitor, then x is playing a game. For all x, if x were a sailor, then x is drinking water. For all x, if x drinks water, then x is a sailor. For all x, if x plays a game, then x is a janitor.