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_6 -> r_6. p_6 -> q_6. r -> p_6. r_6 -> t.
q_6 -> t can be inferred via the transitivity rule. p_6 -> r_6 can be inferred via the transitivity rule. r -> q_6 can be inferred via the transitivity rule.