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_16 or w. ~p_16 or r_16. w_4 <-> r_16. ~w.
w or r_16 can be inferred via the resolution rule. w_4 -> r_16 can be inferred via the biconditional elimination rule. r_16 -> w_4 can be inferred via the biconditional elimination rule.