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_14: ~R_14(x_14). q. R_14(a_14) <-> s.
R_14(a_14) -> s can be inferred via the biconditional elimination rule. s -> R_14(a_14) can be inferred via the biconditional elimination rule.