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 -> p_1. t_1 -> q. p_1 -> t_1.
q -> t_1 can be inferred via the transitivity rule. t_1 -> p_1 can be inferred via the transitivity rule. p_1 -> q can be inferred via the transitivity rule.