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_1 -> u. s_2 and q_10. s_2 -> q_1.
s_2 -> u can be inferred via the transitivity rule. s_2 can be inferred via the simplification rule. q_10 can be inferred via the simplification rule.