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: s_2 -> w_1. t -> p_6. p_6 -> s_2. q_2 -> t.
t -> s_2 can be inferred via the transitivity rule. p_6 -> w_1 can be inferred via the transitivity rule. q_2 -> p_6 can be inferred via the transitivity rule.