Assertion: rheumatoid arthritis's joint | /r/CapableOf | become red
Facets:
value: during flares
type: TEMPORAL
value: frequently
type: TEMPORAL
Source sentences:
text: Also during flares, joints frequently become warm, red, swollen, painful, and tender.
text: Active inflammation is first seen in the synovial membranes of the joints, which become red and swollen.
text: When the disease is active, affected joints become red, swollen, painful, and feel warm to the touch.