Assertion: brain tumor's brain | /r/HasProperty | protected
Facets:
value: very
type: DEGREE
value: from most cancer-causing chemicals
type: OTHER
value: relatively
type: DEGREE
Source sentences:
text: But the brain is relatively protected from most cancer-causing chemicals that we might breathe in or eat, so these factors are not likely to play a major role in these cancers.
text: As the brain is a very well-protected site, there are not too many drug choices that are effective in treating brain tumors.