What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? r_6 -> q_17. p_4 -> w. forall x: ~U(x). U(a_24) <-> q_17. w -> r_6.
p_4 -> r_6. w -> q_17. U(a_24) -> q_17. q_17 -> U(a_24).