Assertion: ankylosing spondylitis's symptom | /r/HasProperty | low back pain
Facets:
value: in the morning
type: TEMPORAL
Source sentences:
text: The most common symptom of ankylosing spondylitis is low back pain and/or neck pain, morning stiffness and limited motion that is improved by exercise and unrelieved by periods of rest.
text: The most common symptom of ankylosing spondylitis (AS) is low back pain that develops so gradually
text: Another symptom of AS is stiffness and low back pain in the morning, which usually improves with activity as the day progresses.