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: R_2(x) -> T(x). exists x: P_2(x) -> R_4(x). forall x: R_2(x) or ~R_4(x).
forall x: R_4(x) -> R_2(x) can be inferred via the universal rewriting rule.