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: p -> q_14. r <-> q_14. s_2 -> p. r -> s_2.
s_2 -> q_14 can be inferred via the transitivity rule. r -> p can be inferred via the transitivity rule. r -> q_14 can be inferred via the biconditional elimination rule. q_14 -> r can be inferred via the biconditional elimination rule.