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At first , the POM cluster bioconjugates were created by attaching the bioactive ligands on an amine grafted POM via simple amidation reaction .
 Chemical: POM; Chemical: amine
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: POM; Chemical: amine