Assertion: caliphate's army | /r/CapableOf | besiege the city
Facets:
value: in the aksu region
type: LOCATION
value: for two years
type: TEMPORAL
Source sentences:
text: An army of the emir managed to recapture it in 799, but Louis, at the head of an army, crossed the Pyrenees and besieged the city for two years until it finally capitulated in 801.
text: Two years later, an Arab/Tibetan army besieged two cities in the Aksu region of what is now Xinjiang, western China.