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He was put on aspirin following surgery and took ibuprofen for fever for nearly a week prior to presentation .
 Chemical: aspirin; Chemical: ibuprofen; Disease: fever
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: Disease, Chemical 
Text: {0} 
Answer:
 Chemical: aspirin; Chemical: ibuprofen; Disease: fever