What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? forall x_14: P_14(x_14) <-> W_4(x_14). s_2 -> r_1. W_4(d) or s_2. P_14(d) -> r_1.
forall x_14: P_14(x_14) -> W_4(x_14). forall x_14: W_4(x_14) -> P_14(x_14).