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 y: T_2(y) or ~U_4(y). forall y: T_2(y) -> U_4(y).
forall y: U_4(y) -> T_2(y) can be inferred via the universal rewriting rule.