Assertion: primary brain tumor | /r/HasProperty | rare
Facets:
value: in both populations
type: LOCATION
Source sentences:
text: Primary brain tumors are rare as compared to other cancers of body.
text: Other primary brain tumors in adults are rare.
text: Primary brain tumors can develop in children and adults but are considered to be rare in both populations.
text: Primary brain tumors are rare enough that they are not screened for with any specific tests.