What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? exists x_7: P_7(x_7) <-> U_4(x_7). forall x_7: ~P_2(x_7) or R_2(x_7). forall x_7: R_2(x_7) -> P_7(x_7). forall x_7: P_2(x_7) or U_4(x_7).
forall x_7: U_4(x_7) or R_2(x_7). exists x_7: P_7(x_7) -> U_4(x_7). exists x_7: U_4(x_7) -> P_7(x_7).