2164
CONCLUSION : As fentanyl exacerbated postoperative nausea and vomiting without an improvement in postoperative pain and also had adverse cardiorespiratory effects , it appears to be an unnecessary and possibly detrimental supplement to sevoflurane in day surgery .
 Chemical: fentanyl; Disease: postoperative nausea and vomiting; Disease: postoperative pain; Chemical: sevoflurane
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: Disease, Chemical 
Text: {0} 
 Entities: fentanyl, postoperative nausea and vomiting, postoperative pain, sevoflurane 
Answer:
 Chemical: fentanyl; Disease: postoperative nausea and vomiting; Disease: postoperative pain; Chemical: sevoflurane