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While citronellyl nitrile , 3 - methyl - 5 - phenylpentanenitrile , cinnamyl nitrile , and 3 - methyl - 5 - phenylpent - 2 - enenitrile revealed positive results in the in - vitro tests , but confirmatory in - vivo tests determined these nitriles to be negative in the in - vivo micronucleus assay .
 Chemical: citronellyl nitrile; Chemical: 3 - methyl - 5 - phenylpentanenitrile; Chemical: cinnamyl nitrile; Chemical: 3 - methyl - 5 - phenylpent - 2 - enenitrile; Chemical: nitriles
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: citronellyl nitrile; Chemical: 3 - methyl - 5 - phenylpentanenitrile; Chemical: cinnamyl nitrile; Chemical: 3 - methyl - 5 - phenylpent - 2 - enenitrile; Chemical: nitriles