What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? For all x, x is a soldier or x is not a politician. For all x, x is a politician if and only if x is a soldier.
For all x, if x were a politician, then x is a soldier. For all x, if x were a politician, then x is a soldier. For all x, if x were a soldier, then x is a politician.