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The remaining two nitriles ( benzonitrile and alpha - cyclohexylidene benzeneacetonitrile ) were negative in the in - vivo micronucleus test .
 Chemical: nitriles; Chemical: benzonitrile; Chemical: alpha - cyclohexylidene benzeneacetonitrile
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: nitriles; Chemical: benzonitrile; Chemical: alpha - cyclohexylidene benzeneacetonitrile