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: Q_4(y) -> ~T_1(y). forall y: W(y) or T_1(y). forall y: ~U(y). forall y: W(y) -> U(y).
forall y: ~W(y) can be inferred via the universal modus tollens rule.