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: q <-> p_14. p_14 -> q. p_14 or ~q.
q -> p_14 can be inferred via the rewriting rule. q -> p_14 can be inferred via the biconditional elimination rule. p_14 -> q can be inferred via the biconditional elimination rule.