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_3 or ~w_3. s_3 <-> q_13. w_3 or q_13.
w_3 -> s_3 can be inferred via the rewriting rule. s_3 -> q_13 can be inferred via the biconditional elimination rule. q_13 -> s_3 can be inferred via the biconditional elimination rule.