7809
Interestingly , repeated amphetamine treatment appears to normalize amphetamine - elicited locomotion and cortical dopamine responses observed in adult rats exposed to adolescent social defeat , providing implications for treating stress - induced dopamine dysfunction .
 Chemical: amphetamine; Chemical: amphetamine; Chemical: dopamine; Chemical: dopamine
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: amphetamine, amphetamine, dopamine, dopamine 
Answer:
 Chemical: amphetamine; Chemical: amphetamine; Chemical: dopamine; Chemical: dopamine