Assertion: breast cancer | /r/HasProperty | felt
Facets:
value: often
type: TEMPORAL
Source sentences:
text: Many breast cancers are also found on screening mammograms, which can detect cancers at an earlier stage, often before they can be felt, and before symptoms develop.
text: Regular mammograms are the best tests doctors have to find breast cancer early, sometimes up to three years before it can be felt.