Assertion: lung cancer | /r/HasProperty | caused
Facets:
Source sentences:
text: Lung cancer also can be caused by using other types of tobacco (such as pipes or cigars), breathing secondhand smoke, being exposed to substances such as asbestos or radon at home or work, and having a family history of lung cancer.
text: Lung cancer is caused when mutated cells in the lungs grow out of control, forming a tumor.