Assertion: ankylosing spondylitis's system | /r/CapableOf | attack healthy joints
Facets:
value: in the spine
type: LOCATION
value: mistakenly
type: MANNER
Source sentences:
text: AS occurs when the immune system mistakenly attacks healthy joints, mainly in the spine.
text: AS occurs when the immune system mistakenly attacks healthy joints, mainly in the spine.
text: Experts believe that the symptoms of AS are triggered by an environmental factor, such as bacteria, causing the immune system to become overactive and attack the healthy joints and nearby areas.