What can be inferred from the following premises in a single inference step (ignoring inferences that add new predicates or constants)? p_8 <-> P_15(a_14). forall x_15: ~Q_15(x_15). forall x_15: P_15(x_15) -> Q_15(x_15).
p_8 -> P_15(a_14). P_15(a_14) -> p_8. forall x_15: ~P_15(x_15).