3898
Two groups of supine subjects were studied under placebo - controlled conditions , one during the night , when sleeping ( n = 7 ) and the other at daytime , when awake ( n = 6 ) .
 None
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:  
Answer:
 None