Assertion: umayyad caliphate | /r/CapableOf | cover 5.17 million square miles
Facets:
value: at its greatest extent
type: OTHER
Source sentences:
text: At its greatest extent, the Umayyad Caliphate covered 5.17 million square miles (13,400,000 km2), making it the largest empire the world had yet seen and the sixth-largest ever to exist in history.