8015
Potent carcinogens found in cigarette smoke include polycyclic aromatic hydrocarbons ( PAH , such as benzo [ a ] pyrene ) , Benzene , and Nitrosamine .
 Benzene
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Benzene