What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? forall x_19: S_1(x_19) or Q_15(x_19). forall x_19: Q_15(x_19) -> Q_3(x_19). exists x_19: P_19(x_19) or U_2(x_19). forall x_19: S_1(x_19) -> Q_3(x_19). forall x_19: ~P_19(x_19).
exists x_19: U_2(x_19). forall x_19: Q_3(x_19).