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_17: T_2(x_17) <-> Q_17(x_17). ~Q_17(a_14).
forall x_17: T_2(x_17) -> Q_17(x_17) can be inferred via the universal biconditional elimination rule. forall x_17: Q_17(x_17) -> T_2(x_17) can be inferred via the universal biconditional elimination rule.