27819
Nicotine primes the effect of cocaine on the induction of LTP in the amygdala .
 Chemical: Nicotine; Chemical: cocaine
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: Nicotine, cocaine 
Answer:
 Chemical: Nicotine; Chemical: cocaine