| http://www.w3.org/ns/prov#value | - When smoked, marijuana produces over 2,000 chemicals, including hydrogen cyanide, ammonia, carbon monoxide, acetaldehyde, acetone, phenol, cresol, naphtalene, and well-known carcinogens such as benz(a)pyrene, benz(a)anthracene, benzene and nitrosamine ;.
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