4190
Compared with the matched , normothermic intensive care unit patients , t ( 1 / 2 ) of morphine was significantly higher during TH .
 Chemical: morphine
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: Chemical 
Text: {0} 
 Entities: morphine 
Answer:
 Chemical: morphine