What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? t <-> Q_17(a_14). forall x_17: P_17(x_17) <-> Q_17(x_17). forall x_17: ~P_17(x_17).
t -> Q_17(a_14). Q_17(a_14) -> t. forall x_17: P_17(x_17) -> Q_17(x_17). forall x_17: Q_17(x_17) -> P_17(x_17). forall x_17: ~Q_17(x_17).