1950
OBJECTIVES : The objectives of this study were to examine the relationship between APOE epsilon4 and subjective effects of trihexyphenidyl on measures reflecting sedation and confusion and to investigate the relationship between trihexyphenidyl - induced subjective effects and objective memory performance .
 Chemical: trihexyphenidyl; Disease: confusion; Chemical: trihexyphenidyl
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: trihexyphenidyl, confusion, trihexyphenidyl 
Answer:
 Chemical: trihexyphenidyl; Disease: confusion; Chemical: trihexyphenidyl