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_17. ~q_17 -> w. r_2 -> p. ~s. w -> r_2.
~q_17 -> r_2 can be inferred via the transitivity rule. w -> p can be inferred via the transitivity rule. s -> q_17 can be inferred via the biconditional elimination rule. q_17 -> s can be inferred via the biconditional elimination rule. ~q_17 can be inferred via the biconditional elimination rule.