What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? forall x_13: W_4(x_13) -> Q(x_13). forall x_13: W_4(x_13) <-> Q_13(x_13). forall x_13: P_7(x_13) or Q_13(x_13). exists x_13: P_7(x_13) -> W_4(x_13).
exists x_13: P_7(x_13) -> Q(x_13). forall x_13: W_4(x_13) -> Q_13(x_13). forall x_13: Q_13(x_13) -> W_4(x_13).