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: w or q_3. p_12 <-> w. p -> ~q_3. ~p_12.
p_12 -> w can be inferred via the biconditional elimination rule. w -> p_12 can be inferred via the biconditional elimination rule. ~w can be inferred via the biconditional elimination rule.