Assertion: pneumonia's disease | /r/HasProperty | rare
Facets:
value: in people with normal immune systems
type: OTHER
value: relatively
type: DEGREE
Source sentences:
text: The disease PCP is relatively rare in people with normal immune systems, but common among people with weakened immune systems, such as premature or severely malnourished children, the elderly, and especially persons living with HIV/AIDS (in whom it is most commonly observed).