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The former two enzymes were particularly active in catalyzing 2 - aminofluorene and 2 - aminoanthracene activation , and molecular docking simulations supported the results with these procarcinogens , in terms of binding in the active sites of P450 2A13 and 2A6 .
 Chemical: 2 - aminofluorene; Chemical: 2 - aminoanthracene
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: 2 - aminofluorene; Chemical: 2 - aminoanthracene