Text: The Western Empire, ruled from Rome, fell to the Ostrogoths in 476, while its neighbour, the Eastern, or By?κantine Empire, became one of the longest-lived empires the world has ever known, dating from 395 to 1453.
Entailment: The Western Empire fell almost 1000 years before the Eastern Empire.
Contradiction: The Western and Eastern Empires fell at the same time.