Assertion: sulfur dioxide | /r/HasProperty | poisonous gas
Facets:
Source sentences:
text: When sulfur burns it produces sulfur dioxide, a poisonous gas.
text: Sulfur dioxide can be dangerous and poisonous, and research has shown that it can be harmful to people, and the environment.
text: Burning sulfur creates sulfur dioxide, which is a poisonous gas that was used to fumigate buildings contaminated with infectious diseases.