What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? Name the inference rule being used: forall x_5: Q_4(x_5) -> W(x_5). forall x_5: P_4(x_5) -> W(x_5). exists x_5: W(x_5) -> Q_5(x_5). forall x_5: Q_5(x_5) -> P(x_5). forall x_5: P_4(x_5) or Q_4(x_5).
exists x_5: W(x_5) -> P(x_5) can be inferred via the existential transitivity rule. exists x_5: Q_4(x_5) -> Q_5(x_5) can be inferred via the existential transitivity rule. exists x_5: P_4(x_5) -> Q_5(x_5) can be inferred via the existential transitivity rule. forall x_5: W(x_5) can be inferred via the universal disjunction elimination rule.