What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? forall y: P(y) -> W_3(y). forall y: Q_3(y) or P(y). forall y: W_3(y) -> S_2(y). forall y: Q_3(y) <-> S_2(y).
forall y: P(y) -> S_2(y). forall y: Q_3(y) -> S_2(y). forall y: S_2(y) -> Q_3(y).