Assertion: crystalline silica | /r/HasProperty | known carcinogen
Facets:
Source sentences:
text: Crystalline silica is a known carcinogen found in sand, stone and artificial stone.
text: Crystalline silica is considered a known carcinogen and can lead to silicosis, a chronic disease that scars lung tissue.
text: The other bad news is that crystalline silica is also a known carcinogen which means it can cause lung cancer.