Assertion: radon | /r/HasProperty | carcinogenic
Facets:
value: at high concentrations
type: LOCATION
Source sentences:
text: It's essential to know whether radon is present in your home and in what concentration because radon, especially at high concentrations, is carcinogenic and the second leading cause of lung cancer after smoking.
text: Radon is a carcinogenic gas that is hazardous to inhale.