Assertion: autoimmune disease's symptom | /r/HasProperty | stiffness of the joints
Facets:
Source sentences:
text: Symptoms that follow include pain, swelling, and stiffness of the joints, and the skin takes on a tight, shiny appearance.
text: Symptoms include painful swelling and stiffness of the joints, particularly in the hands and feet.
text: Symptoms include pain, swelling, and stiffness of the joints.