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 -> w. w_2. p_12 -> ~w_2. ~w.
~p can be inferred via the modus tollens rule. ~p_12 can be inferred via the modus tollens rule. w_2 and ~w can be inferred via the conjunction rule. ~w and w_2 can be inferred via the conjunction rule.