Assertion: ankylosing spondylitis's symptom | /r/CapableOf | develop over year
Facets:
value: gradually
type: MANNER
value: usually
type: TEMPORAL
Source sentences:
text: These symptoms tend to develop gradually, usually over several months or years, and may come and go over time.
text: The symptoms of ankylosing spondylitis (AS) usually develop slowly over several months or years.
text: These symptoms tend to develop gradually, usually over several months or years, and may come and go over time.