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: s -> q_2. s <-> q_14. q_14 or ~q.
q -> q_14 can be inferred via the rewriting rule. s -> q_14 can be inferred via the biconditional elimination rule. q_14 -> s can be inferred via the biconditional elimination rule.