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_19: Q_15(x_19) -> U(x_19). exists x_19: P_19(x_19) or Q_19(x_19). forall x_19: Q_19(x_19) -> T(x_19). forall x_19: P_15(x_19) -> U(x_19). forall x_19: P_15(x_19) or Q_15(x_19). forall x_19: ~P_19(x_19).
exists x_19: Q_19(x_19) can be inferred via the existential disjunctive syllogism rule. forall x_19: U(x_19) can be inferred via the universal disjunction elimination rule.