What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? There is at least one x for which if x were a cashier, then x is playing tennis. For all x, if x plays tennis, then x is a politician. For all x, if x plays tennis, then x is a cashier.
There is at least one x for which if x were a cashier, then x is a politician. There is at least one x for which x is a cashier if and only if x will play tennis. There is at least one x for which x will play tennis if and only if x is a cashier.