Assertion: rheumatoid arthritis's pain | /r/HasProperty | primary symptoms
Facets:
value: in this stage
type: TEMPORAL
Source sentences:
text: Pain, stiffness, swelling, and limited motion and function of joints -- especially hand and foot joints -- are the primary symptoms.
text: There are several diseases where joint pain is primary, and is considered the main feature.
text: Pain, swelling, stiffness and loss of mobility are still the primary symptoms in this stage.