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. w or ~t. r_1 and q_5.
~t can be inferred via the disjunctive syllogism rule. r_1 can be inferred via the simplification rule. q_5 can be inferred via the simplification rule. t -> w can be inferred via the rewriting rule.