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: p_6 -> w_1. p -> p_6. r_6 -> t. w_1 -> r_6.
p_6 -> r_6 can be inferred via the transitivity rule. p -> w_1 can be inferred via the transitivity rule. w_1 -> t can be inferred via the transitivity rule.