Assertion: ankylosing spondylitis's condition | /r/CapableOf | call ankylosing spondylitis
Facets:
Source sentences:
text: But you should be aware that back pain can also signal a more serious condition called ankylosing spondylitis.
text: But a condition called ankylosing spondylitis is actually an inflammatory type of arthritis that affects the spinal vertebra and other large joints in the body.