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_3 -> w. w -> r_1. r_1 -> q_3.
q_3 -> r_1 can be inferred via the transitivity rule. w -> q_3 can be inferred via the transitivity rule. r_1 -> w can be inferred via the transitivity rule.