What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? Q_8(a_7) -> ~q. forall x_8: Q_8(x_8) -> U(x_8). q. forall x_8: U(x_8) -> Q_8(x_8).
~Q_8(a_7). forall x_8: Q_8(x_8) <-> U(x_8). forall x_8: U(x_8) <-> Q_8(x_8).