What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? u_4 <-> S_13(h). ~p_2 or Q_1(h). p_2 or u_4. forall x_13: Q_1(x_13) -> S_13(x_13).
u_4 or Q_1(h). R_1(h) -> ~p_2. u_4 -> S_13(h). S_13(h) -> u_4.