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: exists x_6: ~Q(x_6) or R(x_6). forall x_6: Q_6(x_6) -> Q(x_6). forall x_6: P_6(x_6) -> Q(x_6). forall x_6: P_6(x_6) or Q_6(x_6).
forall x_6: Q(x_6) can be inferred via the universal disjunction elimination rule.