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_1: T(x_1) -> Q_1(x_1). exists x_1: W(x_1) <-> T(x_1). forall x_1: ~Q_1(x_1).
forall x_1: ~T(x_1) can be inferred via the universal modus tollens rule. exists x_1: W(x_1) -> T(x_1) can be inferred via the existential biconditional elimination rule. exists x_1: T(x_1) -> W(x_1) can be inferred via the existential biconditional elimination rule.