What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? forall y_2: U(y_2) or ~Q_3(y_2). forall y_2: U(y_2) -> W_3(y_2). exists y_2: W_3(y_2) -> Q_3(y_2).
exists y_2: U(y_2) -> Q_3(y_2). forall y_2: Q_3(y_2) -> U(y_2).