What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? forall y_1: W(y_1) or Q_3(y_1). forall y_1: W_3(y_1). forall y_1: S_4(y_1) <-> W(y_1). exists y_1: ~S_4(y_1).
forall y_1: S_4(y_1) -> W(y_1). forall y_1: W(y_1) -> S_4(y_1). exists y_1: ~W(y_1).