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: q_4 -> p. p -> t_4. t_4 -> w_4. q_4 or t_1. t_1 -> t_4.
q_4 -> t_4 can be inferred via the transitivity rule. p -> w_4 can be inferred via the transitivity rule. t_1 -> w_4 can be inferred via the transitivity rule.