for instance, if it is true to say of a man that he is not a man, evidently it is also true to say that he is either a trireme or not a trireme.
esaten ari naiz, adibidez, gizakia ez-gizakia dela benetan esaterik baldin badago, orduan argi dagoela trirremea edo ez-trirremea dela ere esatea badagoela.