Assertion: ankylosing spondylitis's symptom | /r/HasProperty | lower back pain
Facets:
value: in a majority of patients
type: OTHER
Source sentences:
text: The primary symptom of ankylosing spondylitis is lower back pain.
text: In a majority of patients, the initial symptoms are lower back pain and stiffness.
text: The most common symptom of spondyloarthropathy is lower back pain.