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Mapping the cAMP receptor protein contact site on the alpha subunit of Escherichia coli RNA polymerase .
 GENE: cAMP receptor protein contact site; GENE: Escherichia coli RNA polymerase
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: GENE 
Text: {0} 
 Entities: cAMP receptor protein contact site, Escherichia coli RNA polymerase 
Answer:
 GENE: cAMP receptor protein contact site; GENE: Escherichia coli RNA polymerase