What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? exists x_10: P_7(x_10) or ~P(x_10). forall x_10: P(x_10) -> U(x_10). forall x_10: U(x_10) -> P(x_10).
exists x_10: P(x_10) -> P_7(x_10). forall x_10: P(x_10) <-> U(x_10). forall x_10: U(x_10) <-> P(x_10).