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: ~R_14(a_14) -> q. q_1 -> q. forall x_14: R_14(x_14) <-> S_14(x_14). ~S_14(a_14).
forall x_14: R_14(x_14) -> S_14(x_14) can be inferred via the universal biconditional elimination rule. forall x_14: S_14(x_14) -> R_14(x_14) can be inferred via the universal biconditional elimination rule.