Assertion: rheumatoid arthritis's system | /r/CapableOf | attack organ
Facets:
value: sometimes
type: TEMPORAL
Source sentences:
text: Painful autoimmune and inflammatory conditions, rheumatic diseases cause the immune system to attack a person’s joints, muscles, bones, connective tissue, or organs.
text: In people who have rheumatoid arthritis, something—possibly infections, cigarette smoking, and physical or emotional stress, among other causes—triggers the immune system to attack the joints (and sometimes other organs).