What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? forall y: W_4(y) -> Q_2(y). forall y: ~W_4(y). forall y: Q_2(y) <-> W_4(y).
forall y: Q_2(y) -> W_4(y). forall y: W_4(y) -> Q_2(y). forall y: ~Q_2(y).