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_3: Q_1(x_3). exists x_3: P_3(x_3) or ~Q_1(x_3).
exists x_3: Q_1(x_3) -> P_3(x_3) can be inferred via the existential rewriting rule.