17873
Mutagenicity of the cysteine S - conjugate sulfoxides of trichloroethylene and tetrachloroethylene in the Ames test .
 Chemical: cysteine; Chemical: S; Chemical: sulfoxides; Chemical: trichloroethylene; Chemical: tetrachloroethylene
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
Answer:
 Chemical: cysteine; Chemical: S; Chemical: sulfoxides; Chemical: trichloroethylene; Chemical: tetrachloroethylene