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Meanwhile , uncovered poly ( ethylene glycol ) segments render the participating inclusion of alpha - cyclodextrin for the architecture of in situ hydrogels .
 Chemical: poly ( ethylene glycol ); Chemical: alpha - cyclodextrin
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: poly ( ethylene glycol ); Chemical: alpha - cyclodextrin