Text: Founded in 641 and expanded by the Fatimids in the mid-ninth century, Cairo Al-Qahira or the Cityof Victory became one of the most powerful Islamic cities in the world during the Medieval era, marking a rebirth in Egypt's fortunes.
Entailment: Cairo was one of the most powerful Islamic cities in the Medieval era.
Contradiction: Cairo never became a powerful city, as was hoped at the time.