Assertion: rheumatoid arthritis's joint | /r/HasProperty | principal focus of ra
Facets:
value: with ra
type: OTHER
value: almost always
type: TEMPORAL
Source sentences:
text: Although the joints are almost always the principal focus of RA, other organ systems may also be involved.
text: With RA, the joints are the primary targets of the assault, causing cellular damage while spurring chronic and often unrelenting inflammation.