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: u_3 -> r_2. r_16 <-> r_2. ~w or r_16. w or u_3.
u_3 or r_16 can be inferred via the resolution rule. r_16 -> r_2 can be inferred via the biconditional elimination rule. r_2 -> r_16 can be inferred via the biconditional elimination rule.