Assertion: caliphate's army | /r/CapableOf | besiege constantinople
Facets:
value: in 1453
type: TEMPORAL
value: in 717 ad
type: TEMPORAL
Source sentences:
text: In 717 AD, an army and fleet of Muslim Arabs from the Umayyad Caliphate besieged Constantinople as a climax to the Arab-Byzantine Wars.
text: In 1453, an army from the Ottoman Empire, led by Sultan Mehmed II himself, besieged Constantinople.