Assertion: ankylosing spondylitis | /r/HasSubevent | stiffness
Facets:
Source sentences:
text: Ankylosing spondylitis is a form of arthritis that leads to pain and stiffness primarily in the joints of the spine, as well as affecting the ligaments and tendons.
text: Ankylosing spondylitis is a form of arthritis that leads to pain and stiffness primarily in the joints of the spine, as well as affecting the ligaments and tendons.