2515
The interaction of the selective norepinephrine reuptake inhibitor ( - ) - reboxetine with the human alpha 4 beta 2 nicotinic acetylcholine receptor ( nAChR ) in different conformational states was studied by several functional and structural approaches .
 Chemical: norepinephrine; Chemical: ( - ) - reboxetine; Chemical: acetylcholine
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: norepinephrine, ( - ) - reboxetine, acetylcholine 
Answer:
 Chemical: norepinephrine; Chemical: ( - ) - reboxetine; Chemical: acetylcholine