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_4 -> q_4. p_11 -> t_1. t_1 -> u_4. p_11. u_4 -> q_4.
t_1 can be inferred via the modus ponens rule. p_11 -> u_4 can be inferred via the transitivity rule. t_1 -> q_4 can be inferred via the transitivity rule.