20887
In contrast to current users , these abstinent individuals , despite extended histories of chronic cocaine - abuse ( average duration of use = 8 . 2 years ) , performed the task just as efficiently as non - users .
 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: cocaine 
Answer:
 Chemical: cocaine