2565
METHODS : Following induction of anesthesia by fentanyl ( 0 . 15 mg kg ( - 1 ) ) and propofol ( 2 . 0 mg kg ( - 1 ) ) , 13 patients received phenylephrine ( 0 . 1 mg iv ) and 12 patients received ephedrine ( 10 mg iv ) to restore mean arterial pressure ( MAP ) .
 Chemical: fentanyl; Chemical: propofol; Chemical: phenylephrine; Chemical: ephedrine
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, propofol, phenylephrine, ephedrine 
Answer:
 Chemical: fentanyl; Chemical: propofol; Chemical: phenylephrine; Chemical: ephedrine