23539
Nicotine enhances cognitive performance , and in the zebra finch ( Taeniopygia guttata ) , which is a well - established model of cognition , the effect of nicotine on song production has been reported .
 Chemical: Nicotine; Chemical: nicotine
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, nicotine 
Answer:
 Chemical: Nicotine; Chemical: nicotine