Assertion: liao dynasty | /r/CapableOf | weaken the defense of the china
Facets:
value: drastically
type: MANNER
Source sentences:
text: Amidst political chaos in the north, the strategic Sixteen Prefectures (region along today's Great Wall) were ceded to the emerging Khitan Liao dynasty, which drastically weakened the defense of the China proper against northern nomadic empires.