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Serratin a new metabolite obtained from Serratia marcescens , a bacterium isolated from the microflora associated with banana plantations .
 Chemical: Serratin
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
 Entities: Serratin 
Answer:
 Chemical: Serratin