What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? r or ~P(h_4). u_1 <-> r. ~u_1. forall x_12: P(x_12) <-> S_12(x_12).
P(h_4) -> r. u_1 -> r. r -> u_1. ~r. forall x_12: P(x_12) -> S_12(x_12). forall x_12: S_12(x_12) -> P(x_12).