Assertion: lung cancer | /r/CreatedBy | exposure
Facets:
value: to radon
type: TRANSITIVE-OBJECT
value: to other factors
type: CAUSE
value: to secondhand smoke
type: OTHER
value: to air pollution
type: OTHER
Source sentences:
text: Lung cancer in non-smokers can be caused by exposure to radon, secondhand smoke, air pollution, or other factors.