12439
In this study , we compared the effects of the alpha 7 - selective agonist ( PNU - 282987 ) and PAM ( PNU - 120596 ) in a variety of behavioral tests in Sprague Dawley rats to look at their effects on learning and memory as well as anxiety .
 Chemical: PNU - 282987; Chemical: PNU - 120596
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: PNU - 282987, PNU - 120596 
Answer:
 Chemical: PNU - 282987; Chemical: PNU - 120596