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: ~Q_1(x_1) or S_2(x_1). forall x_1: T(x_1) <-> R(x_1). forall x_1: Q_1(x_1) or T(x_1). forall x_1: ~R(x_1).
forall x_1: T(x_1) or S_2(x_1) can be inferred via the universal resolution rule. forall x_1: T(x_1) -> R(x_1) can be inferred via the universal biconditional elimination rule. forall x_1: R(x_1) -> T(x_1) can be inferred via the universal biconditional elimination rule. forall x_1: ~T(x_1) can be inferred via the universal biconditional elimination rule.